uu.seUppsala University Publications
Change search
Refine search result
1234567 151 - 200 of 917
CiteExportLink to result list
Permanent link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Rows per page
  • 5
  • 10
  • 20
  • 50
  • 100
  • 250
Sort
  • Standard (Relevance)
  • Author A-Ö
  • Author Ö-A
  • Title A-Ö
  • Title Ö-A
  • Publication type A-Ö
  • Publication type Ö-A
  • Issued (Oldest first)
  • Issued (Newest first)
  • Created (Oldest first)
  • Created (Newest first)
  • Last updated (Oldest first)
  • Last updated (Newest first)
  • Disputation date (earliest first)
  • Disputation date (latest first)
  • Standard (Relevance)
  • Author A-Ö
  • Author Ö-A
  • Title A-Ö
  • Title Ö-A
  • Publication type A-Ö
  • Publication type Ö-A
  • Issued (Oldest first)
  • Issued (Newest first)
  • Created (Oldest first)
  • Created (Newest first)
  • Last updated (Oldest first)
  • Last updated (Newest first)
  • Disputation date (earliest first)
  • Disputation date (latest first)
Select
The maximal number of hits you can export is 250. When you want to export more records please use the Create feeds function.
  • 151.
    Försth, Peter
    et al.
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Surgical Sciences, Orthopaedics.
    Michaëlsson, Karl
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Surgical Sciences, Orthopaedics.
    Sandén, Bengt
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Surgical Sciences, Orthopaedics.
    More on Fusion Surgery for Lumbar Spinal Stenosis2016In: New England Journal of Medicine, ISSN 0028-4793, E-ISSN 1533-4406, Vol. 375, no 18, p. 1806-1807Article in journal (Refereed)
  • 152.
    Försth, Peter
    et al.
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Surgical Sciences, Orthopaedics. Karolinska Inst, Stockholm Spine Ctr, S-10401 Stockholm, Sweden..
    Olafsson, Gylfi
    Karolinska Inst, Dept Learning Informat Management & Eth, S-10401 Stockholm, Sweden.;Quantify Res, Stockholm, Sweden..
    Carlsson, Thomas
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Surgical Sciences, Orthopaedics.
    Frost, Anders
    Karolinska Inst, Stockholm Spine Ctr, S-10401 Stockholm, Sweden..
    Borgstrom, Fredrik
    Karolinska Inst, Dept Learning Informat Management & Eth, S-10401 Stockholm, Sweden.;Quantify Res, Stockholm, Sweden..
    Fritzell, Peter
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Surgical Sciences, Orthopaedics. Futurum Acad Hlth & Care, Neuroorthoped Ctr, Ryhov, Sweden..
    Öhagen, Patrik
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Medicinska och farmaceutiska vetenskapsområdet, centrumbildningar mm, UCR-Uppsala Clinical Research Center.
    Michaelsson, Karl
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Surgical Sciences, Orthopaedics. Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Medicinska och farmaceutiska vetenskapsområdet, centrumbildningar mm, UCR-Uppsala Clinical Research Center.
    Sanden, Bengt
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Surgical Sciences, Orthopaedics.
    A Randomized, Controlled Trial of Fusion Surgery for Lumbar Spinal Stenosis2016In: New England Journal of Medicine, ISSN 0028-4793, E-ISSN 1533-4406, Vol. 374, no 15, p. 1413-1423Article in journal (Refereed)
    Abstract [en]

    BACKGROUND The efficacy of fusion surgery in addition to decompression surgery in patients who have lumbar spinal stenosis, with or without degenerative spondylolisthesis, has not been substantiated in controlled trials.

    METHODS We randomly assigned 247 patients between 50 and 80 years of age who had lumbar spinal stenosis at one or two adjacent vertebral levels to undergo either decompression surgery plus fusion surgery (fusion group) or decompression surgery alone (decompression-alone group). Randomization was stratified according to the presence of preoperative degenerative spondylolisthesis (in 135 patients) or its absence. Outcomes were assessed with the use of patient-reported outcome measures, a 6-minute walk test, and a health economic evaluation. The primary outcome was the score on the Oswestry Disability Index (ODI; which ranges from 0 to 100, with higher scores indicating more severe disability) 2 years after surgery. The primary analysis, which was a per-protocol analysis, did not include the 14 patients who did not receive the assigned treatment and the 5 who were lost to follow-up.

    RESULTS There was no significant difference between the groups in the mean score on the ODI at 2 years (27 in the fusion group and 24 in the decompression-alone group, P = 0.24) or in the results of the 6-minute walk test (397 m in the fusion group and 405 m in the decompression- alone group, P = 0.72). Results were similar between patients with and those without spondylolisthesis. Among the patients who had 5 years of follow-up and were eligible for inclusion in the 5-year analysis, there were no significant differences between the groups in clinical outcomes at 5 years. The mean length of hospitalization was 7.4 days in the fusion group and 4.1 days in the decompression-alone group (P< 0.001). Operating time was longer, the amount of bleeding was greater, and surgical costs were higher in the fusion group than in the decompression-alone group. During a mean follow-up of 6.5 years, additional lumbar spine surgery was performed in 22% of the patients in the fusion group and in 21% of those in the decompression-alone group.

    CONCLUSIONS Among patients with lumbar spinal stenosis, with or without degenerative spondylolisthesis, decompression surgery plus fusion surgery did not result in better clinical outcomes at 2 years and 5 years than did decompression surgery alone.

  • 153.
    Försth, Peter
    et al.
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Surgical Sciences, Orthopaedics.
    Svedniark, Per
    Karolinska Inst, Dept Mol Med & Surg, Sect Orthopaed & Sports Med, Karolinska Univ Hosp, Solna, Sweden.
    Noz, Marilyn E.
    NYU, Dept Radiol, Sch Med, 560 1St Ave, New York, NY 10016 USA.
    Maguire Jr, Gerald Q.
    KTH Royal Inst Technol, Sch Informat & Commun Technol, Stockholm, Sweden.
    Zeleznik, Mike P.
    Univ Utah, Coll Engn, Sch Comp, Salt Lake City, UT 84112 USA.
    Sandén, Bengt
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Surgical Sciences, Orthopaedics.
    Motion Analysis in Lumbar Spinal Stenosis With Degenerative Spondylolisthesis A Feasibility Study of the 3DCT Technique Comparing Laminectomy Versus Bilateral Laminotomy2018In: CLINICAL SPINE SURGERY, ISSN 2380-0186, Vol. 31, no 8, p. E397-E402Article in journal (Refereed)
    Abstract [en]

    Study Design: This was a randomized radiologic biomechanical pilot study in vivo. Objective: The objectives of this study was to evaluate if 3-dimensional computed tomography is a feasible tool in motion analyses of the lumbar spine and to study if preservation of segmental midline structures offers less postoperative instability compared with central decompression in patients with lumbar spinal stenosis with degenerative spondylolisthesis. Summary of Background Data: The role of segmental instability after decompression is controversial. Validated techniques for biomechanical evaluation of segmental motion in human live subjects are lacking. Methods: In total, 23 patients (mean age, 68 y) with typical symptoms and magnetic resonance imaging findings of spinal stenosis with degenerative spondylolisthesis (> 3 mm) in 1 or 2 adjacent lumbar levels from L3 to L5 were included. They were randomized to either laminectomy (LE) or bilateral laminotomy (LT) (preservation of the midline structures). Documentation of segmental motion was made preoperatively and 6 months postoperatively with CT in provoked flexion and extension. Analyses of movements were performed with validated software. The accuracy for this method is 0.6 mm in translation and 1 degree in rotation. Patient-reported outcome measures were collected from the Swespine register preoperatively and 2-year postoperatively. Results: The mean preoperative values for 3D rotation and translation were 6.2 degrees and 1.8 mm. The mean increase in 3D rotation 6 months after surgery was 0.25 degrees after LT and 0.7 degrees after LE (P = 0.79) while the mean increase in 3D translation was 0.15 mm after LT and 1.1 mm after LE (P = 0.42). Both surgeries demonstrated significant improvement in patient-reported outcome measures 2 years postoperatively. Conclusions: The 3D computed tomography technique proved to be a feasible tool in the evaluation of segmental motion in this group of older patients. There was negligible increase in segmental motion after decompressive surgery. LE with removal of the midline structures did not create a greater instability compared with when these structures were preserved.

  • 154. Gaarder, C.
    et al.
    Naess, P. A.
    Christensen, E. Frischknecht
    Hakala, P.
    Handolin, L.
    Heier, H. E.
    Ivancev, K.
    Johansson, P.
    Leppaniemi, A.
    Lippert, E.
    Lossius, H. M.
    Opdahl, H.
    Pillgram-Larsen, J.
    Roise, O.
    Skaga, N. O.
    Soreide, E.
    Stensballe, J.
    Tonnessen, E.
    Töttermann, Anna
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Surgical Sciences, Orthopaedics.
    Ortenwall, P.
    Ostlund, A.
    Scandinavian guidelines - "The massively bleeding patient"2008In: Scandinavian Journal of Surgery, ISSN 1457-4969, E-ISSN 1799-7267, Vol. 97, no 1, p. 15-36Article in journal (Refereed)
  • 155.
    Garland, Anne
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Surgical Sciences, Orthopaedics.
    Early Mortality After Total Hip Arthroplasty In Sweden2017Doctoral thesis, comprehensive summary (Other academic)
    Abstract [en]

    Every year 16 000 individuals receive a total hip arthroplasty (THA) in Sweden. Even though THA is a common procedure, adverse events do occur. The most dramatic complication is death in the postoperative phase. The overall aim of this thesis was to describe and investigate early mortality after THA in Sweden.

    Sweden has an ideal platform for national observational registry studies, thanks to the use of personal identity numbers. Operation-specific information was collected from the Swedish Hip Arthroplasty Register, medical information from the National Board of Health and Welfare, and socioeconomic information was collected from Statistics Sweden. Main outcome was 90-day mortality.

    Study I was a prospective observational register study investigating the risk of mortality after a simultaneous bilateral THA compared with staged bilateral THA. There was no clinically relevant difference in early postoperative mortality between the two groups.

    Studies II and III were nation-wide matched cohort studies, with adjustment for comorbidity and socioeconomic background. Adjusted early mortality in femoral neck fracture patients receiving a THA is about double compared with a matched control population. Young (60-69 years) femoral neck fracture patients receiving a THA have a low absolute mortality risk, while those who are older than 80 years with a higher degree of medical comorbidity run a high risk of early death (II). In study III healthier, younger patients with higher socioeconomic status tended to be selected for cementless THA, resulting in selection bias. Even after accounting for this bias, however, there remains a small absolute and adjusted increase in the risk of death within 14 days after elective THA surgery using fully cemented implants.

    Study IV was a nationwide prospective cohort study comparing different comorbidity measures in terms of predicting early postoperative mortality after THA. A less data-demanding comorbidity measure is better at predicting 90-day mortality than more commonly used coding algorithms.

    In conclusion, socioeconomic background and the presence of comorbidities have an important influence on early mortality after THA, while the type of fixation is of less importance. Future mortality studies could benefit from the use of data that are routinely collected, and thus avoid the logistically complicated procedure now necessary to merge national databases.

    List of papers
    1. Early postoperative mortality after simultaneous or staged bilateral primary total hip arthroplasty: an observational register study from the swedish Hip arthroplasty register
    Open this publication in new window or tab >>Early postoperative mortality after simultaneous or staged bilateral primary total hip arthroplasty: an observational register study from the swedish Hip arthroplasty register
    Show others...
    2015 (English)In: BMC Musculoskeletal Disorders, ISSN 1471-2474, E-ISSN 1471-2474, Vol. 16, article id 77Article in journal (Refereed) Published
    Abstract [en]

    Background: Approximately a fifth of all total hip arthroplasty (THA) patients suffers from bilateral osteoarthritis of the hip. It is unclear whether mortality risks differ between simultaneous bilateral THA and staged bilateral THA. We investigated mortality after simultaneous THA compared with staged bilateral THA in the largest cohort hitherto reported. Methods: The 42,238 patients reported to have received bilateral primary THA from 1992 to 2012 in the Swedish Hip Arthroplasty Register were included. Tumours and fractures as underlying diagnoses were excluded. The time interval between the first and second THA was divided into four categories or treated as a continuous variable. Unadjusted survival was calculated according to Kaplan-Meier and adjusted Cox regression models were fitted in order to calculate crude and adjusted hazard ratios (HR) for the risk of death within different time frames. Results: Patients selected for simultaneous bilateral surgery were younger, more often male, and had lower ASA (American Society of Anesthesiologists) class than patients receiving staged procedures. The adjusted 90-day mortality after the second procedure did not differ between the four investigated groups (simultaneous bilateral [HR 1.3, CI 0.5-3.3], surgeries within 6 months [HR 1.1, CI 0.6-2.0], surgeries between 7 and 12 months [HR 0.7, CI 0.4-1.2], with second surgery after > 12 months as the reference group). For patients older than 75 years, men, patients with ASA class 3 or above, and for patients with rheumatoid arthritis (RA) the 90-day mortality was increased. The unadjusted risk of implant revision of any hip was slightly higher for patients with simultaneous bilateral THA compared to those with staged procedure within one year, but after adjustment for age, gender, diagnosis and implant fixation these differences were no longer statistically significant. Conclusion: There were no clinically relevant differences in early postoperative mortality between simultaneous and staged bilateral surgery in healthy patients. Advanced age, RA, a high ASA class and male sex increased the risk of death within 90 days. There may be an issue with enhanced risk of implant revision in patients with simultaneous bilateral THA that needs to be explored further.

    Keywords
    Postoperative mortality, Perioperative mortality, Simultaneous bilateral total hip arthroplasty, Register, Registry, Total hip replacement, One-stage bilateral THR/THA, Two-stage bilateral THR/THA
    National Category
    Orthopaedics
    Identifiers
    urn:nbn:se:uu:diva-252170 (URN)10.1186/s12891-015-0535-0 (DOI)000352609400001 ()25887667 (PubMedID)
    Note

    Erratum in BMC Musculoskeletal Disorders 2015:16, 263, doi:10.1186/s12891-015-0717-9.

    Available from: 2015-05-06 Created: 2015-05-04 Last updated: 2018-01-11Bibliographically approved
    2. Early mortality and morbidity after total hip arthroplasty in patients with femoral neck fracture
    Open this publication in new window or tab >>Early mortality and morbidity after total hip arthroplasty in patients with femoral neck fracture
    Show others...
    2016 (English)In: Acta Orthopaedica, ISSN 1745-3674, E-ISSN 1745-3682, Vol. 87, no 6, p. 560-566Article in journal (Refereed) Published
    Abstract [en]

    Background and purpose - Early postoperative mortality is relatively high after total hip arthroplasty (THA) that has been performed due to femoral neck fracture. However, this has rarely been investigated after adjustment for medical comorbidity and comparison with the mortality in an age-matched population. We therefore assessed early mortality in hip fracture patients treated with a THA, in the setting of a nationwide matched cohort study.

    Patients and methods - 24,699 patients who underwent THA due to a femoral neck fracture between 1992 and 2012 were matched with 118,518 controls. Kaplan-Meier survival analysis was used to calculate cumulative unadjusted survival, and Cox regression models were fitted to compute hazard ratios (HRs) and 95% confidence intervals (CIs), with adjustment for age, sex, comorbidity, and socioeconomic background.

    Results - 90-day survival was 96.3% (95% CI: 96.0-96.5) for THA cases and 98.7% (95% CI: 98.6-98.8) for control individuals, giving an adjusted HR of 2.2 (95% CI: 2.0-2.4) for THA cases compared to control individuals. Comorbidity burden increased in THA cases over time, but the adjusted risk of death within 90 days did not differ statistically significantly between the time periods investigated (1992-1998, 1999-2005, and 2006-2012). A Charlson comorbidity index of 3 or more, an American Society of Anesthesiologists (ASA) grade of 3 and above, male sex, an age of 80 years and above, an income below the first quartile, and a lower level of education were all associated with an increased risk of 90-day mortality.

    Interpretation - The adjusted early mortality in femoral neck fracture patients who underwent THA was about double that in a matched control population. Patients with femoral neck fracture but with no substantial comorbidity and an age of less than 80 years appear to have a low risk of early death. Patients older than 80 years and those with a Charlson comorbidity index of more than 2 have a high risk of early death, and such patients would perhaps benefit from treatment strategies other than THA, but this should be investigated further.

    National Category
    Orthopaedics
    Identifiers
    urn:nbn:se:uu:diva-309086 (URN)10.1080/17453674.2016.1234869 (DOI)000388757800005 ()27649030 (PubMedID)
    Available from: 2016-12-02 Created: 2016-12-02 Last updated: 2018-01-13Bibliographically approved
    3. Risk of early mortality after cemented compared with cementless total hip arthroplasty: a nationwide matched cohort study
    Open this publication in new window or tab >>Risk of early mortality after cemented compared with cementless total hip arthroplasty: a nationwide matched cohort study
    Show others...
    2017 (English)In: The Bone & Joint Journal, ISSN 2049-4394, E-ISSN 2049-4408, Vol. 99-B, no 1, p. 37-43Article in journal (Refereed) Published
    Abstract [en]

    Aims It has been suggested that cemented fixation of total hip arthroplasty (THA) is associated with an increased peri-operative mortality compared with cementless THA. Our aim was to investigate this through a nationwide matched cohort study adjusting for age, comorbidity, and socioeconomic background. Patients and Methods A total of 178 784 patients with osteoarthritis who underwent either cemented or cementless THA from the Swedish Hip Arthroplasty Register were matched with 862 294 controls from the general population. Information about the causes of death, comorbidities, and socioeconomic background was obtained. Mortality within the first 90 days after the operation was the primary outcome measure. Results Patients who underwent cemented THA had an increased risk of death during the first 14 days compared with the controls (hazard ratio (HR) 1.3, confidence interval (CI) 1.11 to 1.44), corresponding to an absolute increase in risk of five deaths per 10 000 observations. No such early increase of risk was seen in those who underwent cementless THA. Between days 15 and 29 the risk of mortality was decreased for those with cemented THA (HR 0.7, CI 0.62 to 0.87). Between days 30 and 90 all patients undergoing THA, irrespective of the mode of fixation, had a lower risk of death than controls. Patients selected for cementless fixation were younger, healthier and had a higher level of education and income than those selected for cemented THA. A supplementary analysis of 16 556 hybrid THAs indicated that cementation of the femoral component was associated with a slight increase in mortality up to 15 days, whereas no such increase in mortality was seen in those with a cemented acetabular component combined with a cementless femoral component. Conclusion This nationwide matched cohort study indicates that patients receiving cemented THA have a minimally increased relative risk of early mortality that is reversed from day 15 and thereafter. The absolute increase in risk is very small. Our findings lend support to the idea that cementation of the femoral component is more dangerous than cementation of the acetabular component.

    National Category
    Orthopaedics
    Research subject
    Orthopaedics
    Identifiers
    urn:nbn:se:uu:diva-314962 (URN)10.1302/0301-620X.99B1 (DOI)000393669400008 ()28053255 (PubMedID)
    Available from: 2017-02-07 Created: 2017-02-07 Last updated: 2018-01-13Bibliographically approved
    4. Prediction of 90-day mortality after major surgery made simpler: An analysis of different comorbidity measures based on 38,735 patients from the Swedish Hip Arthroplasty Register
    Open this publication in new window or tab >>Prediction of 90-day mortality after major surgery made simpler: An analysis of different comorbidity measures based on 38,735 patients from the Swedish Hip Arthroplasty Register
    Show others...
    (English)Manuscript (preprint) (Other academic)
    National Category
    Orthopaedics
    Identifiers
    urn:nbn:se:uu:diva-314963 (URN)
    Available from: 2017-02-07 Created: 2017-02-07 Last updated: 2018-01-13
  • 156.
    Garland, Anne
    et al.
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Surgical Sciences, Orthopaedics.
    Gordon, Max
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Surgical Sciences. Danderyd Hosp, Swedish Hip Arthroplasty Register, Stockholm, Sweden.; Danderyd Hosp, Karolinska Inst, Stockholm, Sweden..
    Garellick, Göran
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Surgical Sciences. Swedish Hip Arthroplasty Register, Gothenburg, Sweden..
    Kärrholm, Johan
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Surgical Sciences. Swedish Hip Arthroplasty Register, Gothenburg, Sweden.; Univ Gothenburg, Gothenburg, Sweden..
    Sköldenberg, Olof
    Danderyd Hosp, Swedish Hip Arthroplasty Register, Stockholm, Sweden.; Danderyd Hosp, Karolinska Inst, Stockholm, Sweden..
    Hailer, Nils
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Surgical Sciences, Orthopaedics.
    Risk of early mortality after cemented compared with cementless total hip arthroplasty: a nationwide matched cohort study2017In: The Bone & Joint Journal, ISSN 2049-4394, E-ISSN 2049-4408, Vol. 99-B, no 1, p. 37-43Article in journal (Refereed)
    Abstract [en]

    Aims It has been suggested that cemented fixation of total hip arthroplasty (THA) is associated with an increased peri-operative mortality compared with cementless THA. Our aim was to investigate this through a nationwide matched cohort study adjusting for age, comorbidity, and socioeconomic background. Patients and Methods A total of 178 784 patients with osteoarthritis who underwent either cemented or cementless THA from the Swedish Hip Arthroplasty Register were matched with 862 294 controls from the general population. Information about the causes of death, comorbidities, and socioeconomic background was obtained. Mortality within the first 90 days after the operation was the primary outcome measure. Results Patients who underwent cemented THA had an increased risk of death during the first 14 days compared with the controls (hazard ratio (HR) 1.3, confidence interval (CI) 1.11 to 1.44), corresponding to an absolute increase in risk of five deaths per 10 000 observations. No such early increase of risk was seen in those who underwent cementless THA. Between days 15 and 29 the risk of mortality was decreased for those with cemented THA (HR 0.7, CI 0.62 to 0.87). Between days 30 and 90 all patients undergoing THA, irrespective of the mode of fixation, had a lower risk of death than controls. Patients selected for cementless fixation were younger, healthier and had a higher level of education and income than those selected for cemented THA. A supplementary analysis of 16 556 hybrid THAs indicated that cementation of the femoral component was associated with a slight increase in mortality up to 15 days, whereas no such increase in mortality was seen in those with a cemented acetabular component combined with a cementless femoral component. Conclusion This nationwide matched cohort study indicates that patients receiving cemented THA have a minimally increased relative risk of early mortality that is reversed from day 15 and thereafter. The absolute increase in risk is very small. Our findings lend support to the idea that cementation of the femoral component is more dangerous than cementation of the acetabular component.

  • 157.
    Garland, Anne
    et al.
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Surgical Sciences, Orthopaedics. Visby Hosp, Dept Orthopaed, Visby, Sweden; Swedish Hip Arthroplasty Register, Gothenburg, Sweden.
    Rolfson, Ola
    Swedish Hip Arthroplasty Register, Gothenburg, Sweden; Univ Gothenburg, Sahlgrenska Acad, Inst Clin Sci, Dept Orthopaed, Gothenburg, Sweden; Harvard Univ, Massachusetts Gen Hosp, Sch Med, Harris Orthopaed Lab, Boston, MA 02115 USA.
    Garellick, Göran
    Swedish Hip Arthroplasty Register, Gothenburg, Sweden; Univ Gothenburg, Sahlgrenska Acad, Inst Clin Sci, Dept Orthopaed, Gothenburg, Sweden.
    Kärrholm, Johan
    Swedish Hip Arthroplasty Register, Gothenburg, Sweden; Univ Gothenburg, Sahlgrenska Acad, Inst Clin Sci, Dept Orthopaed, Gothenburg, Sweden.
    Hailer, Nils P.
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Surgical Sciences, Orthopaedics. Swedish Hip Arthroplasty Register, Gothenburg, Sweden.
    Early postoperative mortality after simultaneous or staged bilateral primary total hip arthroplasty: an observational register study from the swedish Hip arthroplasty register2015In: BMC Musculoskeletal Disorders, ISSN 1471-2474, E-ISSN 1471-2474, Vol. 16, article id 77Article in journal (Refereed)
    Abstract [en]

    Background: Approximately a fifth of all total hip arthroplasty (THA) patients suffers from bilateral osteoarthritis of the hip. It is unclear whether mortality risks differ between simultaneous bilateral THA and staged bilateral THA. We investigated mortality after simultaneous THA compared with staged bilateral THA in the largest cohort hitherto reported. Methods: The 42,238 patients reported to have received bilateral primary THA from 1992 to 2012 in the Swedish Hip Arthroplasty Register were included. Tumours and fractures as underlying diagnoses were excluded. The time interval between the first and second THA was divided into four categories or treated as a continuous variable. Unadjusted survival was calculated according to Kaplan-Meier and adjusted Cox regression models were fitted in order to calculate crude and adjusted hazard ratios (HR) for the risk of death within different time frames. Results: Patients selected for simultaneous bilateral surgery were younger, more often male, and had lower ASA (American Society of Anesthesiologists) class than patients receiving staged procedures. The adjusted 90-day mortality after the second procedure did not differ between the four investigated groups (simultaneous bilateral [HR 1.3, CI 0.5-3.3], surgeries within 6 months [HR 1.1, CI 0.6-2.0], surgeries between 7 and 12 months [HR 0.7, CI 0.4-1.2], with second surgery after > 12 months as the reference group). For patients older than 75 years, men, patients with ASA class 3 or above, and for patients with rheumatoid arthritis (RA) the 90-day mortality was increased. The unadjusted risk of implant revision of any hip was slightly higher for patients with simultaneous bilateral THA compared to those with staged procedure within one year, but after adjustment for age, gender, diagnosis and implant fixation these differences were no longer statistically significant. Conclusion: There were no clinically relevant differences in early postoperative mortality between simultaneous and staged bilateral surgery in healthy patients. Advanced age, RA, a high ASA class and male sex increased the risk of death within 90 days. There may be an issue with enhanced risk of implant revision in patients with simultaneous bilateral THA that needs to be explored further.

  • 158.
    Garland, Anne
    et al.
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Surgical Sciences, Orthopaedics.
    Rolfsson, Ola
    Institute of clinical sciencesSahlgrenska Academy, University of Gothenburg.
    Garellick, Göran
    Swedish Hip Artroplasty Register, Institute of clinical sciencesSahlgrenska Academy, University of Gothenburg.
    Kärrholm, Johan
    Swedish Hip Arthroplasty Register, Institute of clinical sciencesSahlgrenska Academy, University of Gothenburg.
    Hailer, Nils P.
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Surgical Sciences, Orthopaedics.
    Erratum to:Early postoperative mortality after simultaneous or staged bilateral primary total hip arthroplasty: an observational register study from the Swedish Hip Arthroplasty Register2015In: BMC Musculoskeletal Disorders, ISSN 1471-2474, E-ISSN 1471-2474, Vol. 16, p. 263-263Article in journal (Refereed)
  • 159.
    Garland, Anne
    et al.
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Surgical Sciences, Orthopaedics.
    Rolfsson, Ola
    Institute of clinical sciencesSahlgrenska Academy, University of Gothenburg.
    Garellick, Göran
    Swedish Hip Artroplasty Register, Institute of clinical sciencesSahlgrenska Academy, University of Gothenburg.
    Nemes, Szilard
    Swedish Hip Arthroplasty Register.
    Hailer, Nils
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Surgical Sciences, Orthopaedics.
    Prediction of 90-day mortality after major surgery made simpler: An analysis of different comorbidity measures based on 38,735 patients from the Swedish Hip Arthroplasty RegisterManuscript (preprint) (Other academic)
  • 160. Gaudet, Mia M
    et al.
    Carter, Brian D
    Brinton, Louise A
    Falk, Roni T
    Gram, Inger T
    Luo, Juhua
    Milne, Roger L
    Nyante, Sarah J
    Weiderpass, Elisabete
    Beane Freeman, Laura E
    Sandler, Dale P
    Robien, Kim
    Anderson, Kristin E
    Giles, Graham G
    Chen, Wendy Y
    Feskanich, Diane
    Braaten, Tonje
    Isaacs, Claudine
    Butler, Lesley M
    Koh, Woon-Puay
    Wolk, Alicja
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Surgical Sciences, Orthopaedics.
    Adami, Hans-Olov
    White, Emily
    Margolis, Karen L
    Thun, Michael J
    Gapstur, Susan M
    Pooled analysis of active cigarette smoking and invasive breast cancer risk in 14 cohort studies.2017In: International Journal of Epidemiology, ISSN 0300-5771, E-ISSN 1464-3685, Vol. 46, no 3, p. 881-893Article in journal (Refereed)
    Abstract [en]

    Background: The 2014 US Surgeon General's report noted research gaps necessary to determine a causal relationship between active cigarette smoking and invasive breast cancer risk, including the role of alcohol consumption, timing of exposure, modification by menopausal status and heterogeneity by oestrogen receptor (ER) status.

    Methods: To address these issues, we pooled data from 14 cohort studies contributing 934 681 participants (36 060 invasive breast cancer cases). Cox proportional hazard regression models were used to calculate multivariable-adjusted hazard ratios (HRs) and 95% confidence intervals (CIs).

    Results: Smoking duration before first birth was positively associated with risk ( P -value for trend = 2 × 10 -7 ) with the highest HR for initiation >10 years before first birth (HR = 1.18, CI 1.12-1.24). Effect modification by current alcohol consumption was evident for the association with smoking duration before first birth ( P -value=2×10 -4 ); compared with never-smoking non-drinkers, initiation >10 years before first birth was associated with risk in every category of alcohol intake, including non-drinkers (HR = 1.15, CI 1.04-1.28) and those who consumed at least three drinks per day (1.85, 1.55-2.21). Associations with smoking before first birth were limited to risk of ER+ breast cancer ( P -value for homogeneity=3×10 -3 ). Other smoking timing and duration characteristics were associated with risk even after controlling for alcohol, but were not associated with risk in non-drinkers. Effect modification by menopause was not evident.

    Conclusions: Smoking, particularly if initiated before first birth, was modestly associated with ER+ breast cancer risk that was not confounded by amount of adult alcohol intake. Possible links with breast cancer provide additional motivation for young women to not initiate smoking.

  • 161. Gaudet, Mia M
    et al.
    Gierach, Gretchen L
    Carter, Brian D
    Luo, Juhua
    Milne, Roger L
    Weiderpass, Elisabete
    Giles, Graham G
    Tamimi, Rulla M
    Eliassen, A Heather
    Rosner, Bernard
    Wolk, Alicja
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Surgical Sciences, Orthopaedics.
    Adami, Hans-Olov
    Margolis, Karen L
    Gapstur, Susan M
    Garcia-Closas, Montserrat
    Brinton, Louise A
    Pooled Analysis of Nine Cohorts Reveals Breast Cancer Risk Factors by Tumor Molecular Subtype.2018In: Cancer Research, ISSN 0008-5472, E-ISSN 1538-7445, Vol. 78, no 20, p. 6011-6021Article in journal (Refereed)
    Abstract [en]

    Various subtypes of breast cancer defined by estrogen receptor (ER), progesterone receptor (PR), and HER2 exhibit etiologic differences in reproductive factors, but associations with other risk factors are inconsistent. To clarify etiologic heterogeneity, we pooled data from nine cohort studies. Multivariable, joint Cox proportional hazards regression models were used to estimate HRs and 95% confidence intervals (CI) for molecular subtypes. Of 606,025 women, 11,741 invasive breast cancers with complete tissue markers developed during follow-up: 8,700 luminal A–like (ER+ or PR+/HER2), 1,368 luminal B–like (ER+ or PR+/HER2+), 521 HER2-enriched (ER/PR/HER2+), and 1,152 triple-negative (ER/PR/HER2) disease. Ever parous compared with never was associated with lower risk of luminal A–like (HR, 0.78; 95% CI, 0.73–0.83) and luminal B–like (HR, 0.74; 95% CI, 0.64–0.87) as well as a higher risk of triple-negative disease (HR, 1.23; 95% CI, 1.02–1.50; P value for overall tumor heterogeneity < 0.001). Direct associations with luminal-like, but not HER2-enriched or triple-negative, tumors were found for age at first birth, years between menarche and first birth, and age at menopause (P value for overall tumor heterogeneity < 0.001). Age-specific associations with baseline body mass index differed for risk of luminal A–like and triple-negative breast cancer (P value for tumor heterogeneity = 0.02). These results provide the strongest evidence for etiologic heterogeneity of breast cancer to date from prospective studies.

    Significance: These findings comprise the largest study of prospective data to date and contribute to the accumulating evidence that etiological heterogeneity exists in breast carcinogenesis. Cancer Res; 78(20); 6011–21. ©2018 AACR.

    .

  • 162.
    Gedeborg, Rolf
    et al.
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Surgical Sciences, Anaesthesiology and Intensive Care.
    Chen, Li-Hui
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Medicinska och farmaceutiska vetenskapsområdet, centrumbildningar mm, UCR-Uppsala Clinical Research Center.
    Thiblin, Ingemar
    Centers for Disease Control and Prevention, Hyattsville, Maryland; Department of Surgical Sciences—Forensic Medicine.
    Byberg, Liisa
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Surgical Sciences, Orthopaedics.
    Melhus, Håkan
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Sciences. Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Medicinska och farmaceutiska vetenskapsområdet, centrumbildningar mm, UCR-Uppsala Clinical Research Center.
    Michaëlsson, Karl
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Surgical Sciences, Orthopaedics.
    Warner, Margaret
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Medicinska och farmaceutiska vetenskapsområdet, centrumbildningar mm, UCR-Uppsala Clinical Research Center.
    Prehospital injury deaths-Strengthening the case for prevention: Nationwide cohort study2012In: Journal of Trauma and Acute Care Surgery, ISSN 2163-0755, E-ISSN 2163-0763, Vol. 72, no 3, p. 765-772Article in journal (Refereed)
    Abstract [en]

    BACKGROUND: To determine the frequency and characteristics of prehospital deaths compared with hospital deaths in different subpopulations with severe injuries.

    METHODS: Population-based cohort study using person-based linkage of the Swedish nationwide hospital discharge register with death certificate data. In all, 28,715 injury deaths were identified among 419,137 cases of severe injury during 1998 to 2004. Prehospital deaths were defined as autopsied out-of-hospital deaths with injury as the underlying cause. Their impact on mortality prediction was assessed using the International Classification of Disease Injury Severity Score with the C statistic as a measure of discrimination.

    RESULTS: The majority of all injury deaths occurred either at the scene or before hospitalization. Among persons younger than 65 years, for each hospital death there were nine prehospital deaths. A high proportion of deaths from drowning, suffocation, and firearm injuries were prehospital (85, 82, and 67% of all cases, respectively). More than 90% of hospital deaths resulted from unintentional injuries, while only 43% of prehospital deaths were unintentional. The largest increase in a cause-specific case fatality risk estimate was seen for poisoning, where inclusion of prehospital deaths increased the risk estimate from 1.6% to 22.8%. Injury mortality prediction based on International Classification of Disease Injury Severity Score improved when prehospital deaths were added to hospital data (C statistic increased from 0.86 to 0.93).

    CONCLUSIONS: Prehospital deaths constitute the majority of trauma deaths and differ in major characteristics from hospital deaths. The high proportion of prehospital deaths among young and middle aged people highlights the potential impact of preventive efforts.

  • 163.
    Gedeborg, Rolf
    et al.
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Surgical Sciences, Anaesthesiology and Intensive Care.
    Engquist, Henrik
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Surgical Sciences.
    Berglund, Lars
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Sciences.
    Michaëlsson, Karl
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Surgical Sciences, Orthopaedics.
    Identification of Incident Injuries in Hospital Discharge Registers2008In: Epidemiology, ISSN 1044-3983, E-ISSN 1531-5487, Vol. 19, no 6, p. 860-867Article in journal (Refereed)
    Abstract [en]

    Background: Hospital discharge data on injuries constitute a potentially powerful data source for epidemiologic studies. However, reliable identification of incident injury admissions is necessary. The objective of this study was to develop a prediction model for identifying incident hospital admissions, based on variables derived from a hospital discharge register.

    Methods: There were 743,022 hospital admissions for injury in Sweden 1998–2004. Of these, 23,920 were in the county of Uppsala and 24% of these people had previous injury admissions. To determine if these admissions were new injuries or readmissions for earlier injuries, we reviewed 817 randomly selected hospital records. A prediction model for incident injury admissions was developed on the basis of patient age, type of admission (urgent or elective), time interval from the previous injury admission, main diagnosis, and department type.

    Results: The final prediction model showed good discrimination (c-statistic = 0.969). This model was applied to the validation dataset using the optimal cut-off level, and the resulting sensitivity and specificity were adjusted according to the proportion with a previous injury admission in each injury category. The injury with the highest proportion of possible readmissions was hip contusion (35%). Nevertheless, using the prediction model, incident hip contusions were identified with a sensitivity of 94% (95% confidence interval = 93%–95%) and a specificity of 95% (94%–97%). The accuracy was higher for all other injury categories.

    Conclusions: Incident injury admissions can be accurately separated from readmissions using a prediction model based on information derived from hospital discharge data.

  • 164.
    Gedeborg, Rolf
    et al.
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Surgical Sciences, Anaesthesiology and Intensive Care.
    Furebring, Mia
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Sciences, Infectious Diseases.
    Michaëlsson, Karl
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Surgical Sciences, Orthopaedics.
    Diagnosis-dependent misclassification of infections using administrative data variably affected incidence and mortality estimates in ICU patients2007In: Journal of Clinical Epidemiology, ISSN 0895-4356, E-ISSN 1878-5921, Vol. 60, no 2, p. 155-162Article in journal (Refereed)
    Abstract [en]

    OBJECTIVE: To determine the accuracy of hospital discharge diagnoses in identifying severe infections among intensive care unit (ICU) patients, and estimate the impact of misclassification on incidence and 1-year mortality. STUDY DESIGN AND SETTING: Sepsis, pneumonia, and central nervous system (CNS) infections among 7,615 ICU admissions were identified using ICD-9 and ICD-10 diagnoses from the Swedish hospital discharge register (HDR). Sensitivity, specificity, and likelihood ratios were calculated using ICU database diagnoses as reference standard, with inclusion in sepsis trials (IST) as secondary reference for sepsis. RESULTS: CNS infections were accurately captured (sensitivity 95.4% [confidence interval (CI)=86.8-100] and specificity 99.6% [CI=99.4-99.8]). Community-acquired sepsis (sensitivity 51.1% [CI=41.0-61.2] and specificity 99.4% [CI=99.2-99.6]) and primary pneumonia (sensitivity 38.2% [CI=31.2-45.2] and specificity 98.6% [CI=98.2-99.0]) were more accurately detected than sepsis and pneumonia in general. One-year mortality was accurately estimated for primary pneumonia but underestimated for community-acquired sepsis. However, there were only small differences in sensitivity and specificity between HDR and ICU data in the ability to identify IST. ICD-9 appeared more accurate for sepsis, whereas ICD-10 was more accurate for pneumonia. CONCLUSION: Accuracy of hospital discharge diagnoses varied depending on diagnosis and case definition. The pattern of misclassification makes estimates of relative risk more accurate than estimates of absolute risk.

  • 165.
    Gedeborg, Rolf
    et al.
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Surgical Sciences, Anaesthesiology and Intensive Care. Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Medicinska och farmaceutiska vetenskapsområdet, centrumbildningar mm, UCR-Uppsala Clinical Research Center.
    Svennblad, Bodil
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Medicinska och farmaceutiska vetenskapsområdet, centrumbildningar mm, UCR-Uppsala Clinical Research Center. Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Surgical Sciences, Orthopaedics.
    Byberg, Liisa
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Surgical Sciences, Orthopaedics.
    Michaëlsson, Karl
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Surgical Sciences, Orthopaedics.
    Thiblin, Ingemar
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Surgical Sciences, Forensic Medicine.
    Prediction of mortality risk in victims of violent crimes2017In: Forensic Science International, ISSN 0379-0738, E-ISSN 1872-6283, Vol. 281, p. 92-97Article in journal (Refereed)
    Abstract [en]

    BACKGROUND: To predict mortality risk in victims of violent crimes based on individual injury diagnoses and other information available in health care registries.

    METHODS: Data from the Swedish hospital discharge registry and the cause of death registry were combined to identify 15,000 hospitalisations or prehospital deaths related to violent crimes. The ability of patient characteristics, injury type and severity, and cause of injury to predict death was modelled using conventional, Lasso, or Bayesian logistic regression in a development dataset and evaluated in a validation dataset.

    RESULTS: Of 14,470 injury events severe enough to cause death or hospitalization 3.7% (556) died before hospital admission and 0.5% (71) during the hospital stay. The majority (76%) of hospital survivors had minor injury severity and most (67%) were discharged from hospital within 1day. A multivariable model with age, sex, the ICD-10 based injury severity score (ICISS), cause of injury, and major injury region provided predictions with very good discrimination (C-index=0.99) and calibration. Adding information on major injury interactions further improved model performance. Modeling individual injury diagnoses did not improve predictions over the combined ICISS score.

    CONCLUSIONS: Mortality risk after violent crimes can be accurately estimated using administrative data. The use of Bayesian regression models provides meaningful risk assessment with more straightforward interpretation of uncertainty of the prediction, potentially also on the individual level. This can aid estimation of incidence trends over time and comparisons of outcome of violent crimes for injury surveillance and in forensic medicine.

  • 166.
    Gedeborg, Rolf
    et al.
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Surgical Sciences, Anaesthesiology and Intensive Care. Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Medicinska och farmaceutiska vetenskapsområdet, centrumbildningar mm, UCR-Uppsala Clinical Research Center. Med Prod Agcy, Dept Sci Expertise, POB 26, SE-75103 Uppsala, Sweden..
    Svennblad, Bodil
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Medicinska och farmaceutiska vetenskapsområdet, centrumbildningar mm, UCR-Uppsala Clinical Research Center. Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Surgical Sciences, Orthopaedics.
    Holm, Lennart
    Med Prod Agcy, Dept Usage, Uppsala, Sweden..
    Sjögren, Hans
    Med Prod Agcy, Dept Efficacy & Safety 1, Uppsala, Sweden..
    Bardage, Carola
    Med Prod Agcy, Dept Usage, Uppsala, Sweden..
    Personne, Mark
    Med Prod Agcy, Swedish Poisons Informat Ctr, Uppsala, Sweden..
    Sjöberg, Gunilla
    Med Prod Agcy, Swedish Poisons Informat Ctr, Uppsala, Sweden..
    Feltelius, Nils
    Med Prod Agcy, Dept Sci Expertise, POB 26, SE-75103 Uppsala, Sweden..
    Zethelius, Björn
    Med Prod Agcy, Dept Sci Expertise, POB 26, SE-75103 Uppsala, Sweden..
    Increased availability of paracetamol in Sweden and incidence of paracetamol poisoning: using laboratory data to increase validity of a population-based registry study2017In: Pharmacoepidemiology and Drug Safety, ISSN 1053-8569, E-ISSN 1099-1557, Vol. 26, no 5, p. 518-527Article in journal (Refereed)
    Abstract [en]

    Purpose: To estimate the incidence trend and outcome of paracetamol poisoning, in relation to increased availability of paracetamol from non-pharmacy outlets in 2009.

    Method: Patients' serum paracetamol results over 14years (2000-2013) from 20 (out of 21) regions in Sweden were linked to national registers of hospital care, cause of death, and prescriptions. Paracetamol poisonings were defined by serum paracetamol levels, hospital diagnoses, or cause of death. The change in incidence of poisonings following increased availability of paracetamol was analysed by using segmental regression of time series.

    Results: Of the 12068 paracetamol poisonings, 85% were classified as intentional self-harm. Following increased availability from non-pharmacy outlets, there was a 40.5% increase in the incidence of paracetamol poisoning, from 11.5/100000 in 2009 to 16.2/100000 in 2013. Regression analyses indicated a change in the trend (p<0.0001) but not an immediate jump in the incidence (p=0.5991) following the increased availability. Adjusting for trends in hospital episodes for self-harm, suicides, and the sales volume of paracetamol did not influence the result. All-cause mortality at 30days (3.2%) did not change over time.

    Conclusions: The incidence of paracetamol poisoning in Sweden has increased since 2009, contrasting the decreased incidence in the period of 2007-2009. The change in trend was temporally associated with the introduction of availability of paracetamol from non-pharmacy outlets but did not appear to be related to sales volume of paracetamol or general trends in self-harm or suicides.

  • 167.
    Gedeborg, Rolf
    et al.
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Surgical Sciences, Anaesthesiology and Intensive Care. Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Medicinska och farmaceutiska vetenskapsområdet, centrumbildningar mm, UCR-Uppsala Clinical Research Center.
    Thiblin, Ingemar
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Surgical Sciences, Forensic Medicine.
    Byberg, Liisa
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Surgical Sciences, Orthopaedics.
    Melhus, Håkan
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Sciences.
    Lindbäck, Johan
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Medicinska och farmaceutiska vetenskapsområdet, centrumbildningar mm, UCR-Uppsala Clinical Research Center.
    Michaëlsson, Karl
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Surgical Sciences, Orthopaedics.
    Population density and mortality among individuals in motor vehicle crashes2010In: Injury Prevention, ISSN 1353-8047, E-ISSN 1475-5785, Vol. 16, no 5, p. 302-308Article in journal (Refereed)
    Abstract [en]

    Objective

    To assess whether higher mortality rates among individuals in motor vehicle crashes in areas with low population density depend on injury type and severity or are related to the performance of emergency medical services (EMS).

    Methods

    Prehospital and hospital deaths were studied in a population-based cohort of 41 243 motor vehicle crashes that occurred in Sweden between 1998 and 2004. The final multivariable analysis was restricted to 6884 individuals in motor vehicle crashes, to minimise the effects of confounding factors.

    Results

    Crude mortality rates following motor vehicle crashes were inversely related to regional population density. In regions with low population density, the unadjusted rate ratio for prehospital death was 2.2 (95% CI 1.9 to 2.5) and for hospital death 1.5 (95% CI 1.1 to 1.9), compared with a high-density population. However, after controlling for regional differences in age, gender and the type/severity of injuries among 6884 individuals in motor vehicle crashes, low population density was no longer associated with increased mortality. At 25 years of age, predicted prehospital mortality was 9% lower (95% CI 5% to 12%) in regions with low population density compared with high population density. This difference decreased with increasing age, but was still 3% lower (95% CI 0.5% to 5%) at 65 years of age.

    Conclusions

    The inverse relationship between population density and mortality among individuals in motor vehicle crashes is related to pre-crash factors that influence the type and severity of injuries and not to differences in EMS.

  • 168.
    Gedeborg, Rolf
    et al.
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Surgical Sciences, Anaesthesiology and Intensive Care. Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Medicinska och farmaceutiska vetenskapsområdet, centrumbildningar mm , UCR-Uppsala Clinical Research center.
    Thiblin, Ingemar
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Surgical Sciences, Forensic Medicine.
    Byberg, Liisa
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Surgical Sciences, Orthopaedics.
    Wernroth, Lisa
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Medicinska och farmaceutiska vetenskapsområdet, centrumbildningar mm , UCR-Uppsala Clinical Research center.
    Michaëlsson, Karl
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Surgical Sciences, Orthopaedics. Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Medicinska och farmaceutiska vetenskapsområdet, centrumbildningar mm , UCR-Uppsala Clinical Research center.
    The impact of clinically undiagnosed injuries on survival estimates2009In: Critical Care Medicine, ISSN 0090-3493, E-ISSN 1530-0293, Vol. 37, no 2, p. 449-55Article in journal (Refereed)
    Abstract [en]

    OBJECTIVES:: Missed injury diagnoses may cause potentially preventable deaths. To estimate the effect of clinically undiagnosed injuries on injury-specific survival estimates and the accuracy of an injury severity score. To also estimate the potentially preventable mortality attributable to these injuries. DESIGN, SETTING, AND PATIENTS:: In a nation-wide, population-based study, data were collected from all hospital admissions for injuries in Sweden between 1998 and 2004. We studied 8627 deaths in hospital among 598,137 incident hospital admissions. MEASUREMENTS AND MAIN RESULTS:: New specific-injury categories were added in 7.4% (95% confidence interval [CI] 6.8-8.0) of all deaths with an autopsy rate of 24.2%. It was estimated that this proportion would have increased to 25.1% (95% CI 23.0-27.2), if all deaths had been autopsied. The most pronounced effect of clinically undiagnosed injuries was found for internal organ injury in the abdomen or pelvis, where they reduced the estimated survival from 0.83 to 0.69 (95% CI for the difference: 0.09-0.20). Autopsy diagnoses also revealed substantial bias of survival estimates for vascular injuries in the thorax and crush injuries to the head. The performance of the International Classification of Diseases Injury Severity Score improved when autopsy diagnoses were added to hospital discharge diagnoses. The maximum proportion of injury deaths attributable to missed injuries was estimated to be 6.5%. CONCLUSIONS:: Maintaining a high autopsy rate and merging accurate hospital discharge data and autopsy data are effective ways to improve the accuracy of survival estimates and mortality prediction models, and to estimate mortality attributable to diagnostic failures.

  • 169.
    Gerdin, Bengt
    et al.
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Surgical Sciences.
    Haglund, Ulf
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Surgical Sciences, Upper Abdominal Surgery.
    Nilsson, Olle
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Surgical Sciences, Orthopaedics.
    Persson, L
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Surgical Sciences.
    Wiklund, Lars
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Surgical Sciences, Anaesthesiology and Intensive Care.
    Classification, prioritization and distribution of responsibility. Cooperation of specialties for an optimal trauma care1996In: Läkartidningen, Vol. 93, p. 2656-Article in journal (Other academic)
  • 170. Giannoudis, P V
    et al.
    Chris Arts, J J
    Schmidmaier, G
    Larsson, Sune
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Surgical Sciences, Orthopaedics.
    What should be the characteristics of the ideal bone graft substitute?2011In: Injury, ISSN 0020-1383, E-ISSN 1879-0267, Vol. 42, no Suppl 2, p. S1-S2Article in journal (Refereed)
  • 171. Glynn, A. Wicklund
    et al.
    Michaëlsson, Karl
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Surgical Sciences, Orthopaedics.
    Lind, Monica
    Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Evolutionary Biology.
    Wolk, Alicja
    Aune, M.
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Pharmacy, Department of Pharmaceutical Biosciences.
    Atuma, S.
    Darnerud, P.O.
    Mallmin, Hans
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Surgical Sciences.
    Organochlorines and bone mineral density in Swedish men from the general population2000In: Osteoporosis International, ISSN 0937-941X, E-ISSN 1433-2965, Vol. 11, no 12, p. 1036-1042Article in journal (Refereed)
    Abstract [en]

    Persistent organochlorines (POCs), such as polychlorinated biphenyls (PCBs) and DDT, are present at relatively high concentrations in food and show estrogenic, anti-estrogenic or anti-androgenic activity in biological test systems. Because bone mineral density (BMD) in men is influenced by sex hormones, we looked for associations between BMD and serum concentrations of POCs in 115 men (mean age 63 years, range 40-75 years) from the general Swedish population. Ten PCB congeners, five DDT isomers, hexachlorobenzene, three hexachlorocyclohexane isomers, trans-nonachlor and oxychlordane were analyzed by gas chromatography. Quantitative bone measurements were performed by dual-energy X-ray absorptiometry at three sites: whole body, the L2-L4 region of the lumbar spine, and the neck region of the proximal femur, as well as by quantitative ultrasound on the left os calcis (broadband ultrasound attenuation (BUA) and speed of sound (SOS)). After adjustment for confounding factors in linear regression analyses we found no strong association between serum concentrations of single POCs and the five BMD and ultrasound variables. When POCs were grouped according to hormonal activity (estrogenic, anti-estrogenic, anti-androgenic) and the study subjects were divided into organochlorine concentration quartiles, a weak association was indicated between increased serum concentrations of p,p'-DDE (antiandrogenic) and decreased BMD, BUA and SOS. This may suggest that p,p'-DDE could cause negative effects on bone density, but the findings might also be due to chance since multiple comparisons were made in the statistical analysis. Overall our results do not suggest that the studied POCs caused major effects on bone density in our study group.

  • 172. Gordins, Vladislavs
    et al.
    Hovelius, Lennart
    Sandstrom, Bjorn
    Rahme, Hans
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Surgical Sciences, Orthopaedics.
    Bergstrom, Ulrica
    Risk of arthropathy after the Bristow-Latarjet repair: a radiologic and clinical thirty-three to thirty-five years of follow-up of thirty-one shoulders2015In: Journal of shoulder and elbow surgery, ISSN 1058-2746, E-ISSN 1532-6500, Vol. 24, no 5, p. 691-699Article in journal (Refereed)
    Abstract [en]

    Background: Transfer of the coracoid (Bristow-Latarjet [B-L]) is used to stabilize anterior shoulder instability. We report the long-term results of our first 31 operations with this method. Materials and methods: Thirty-six patients (mean age, 26.7 years) had a B-L repair from 1977 to 1979. Five patients died, and during 2012 to 2013, the remaining 31 shoulders had a follow-up with questionnaire, physical examination, Western Ontario Shoulder Instability Index, Subjective Shoulder Value, Subjective Assessment of Shoulder Function, subjective assessment of loss of motion, and radiologic imaging. Results: One patient required revision surgery because of recurrence and another because of repeat dislocation. Six patients reported subluxations. Eighteen patients (58%) were very satisfied, and 13 (42%) were satisfied. The mean Western Ontario Shoulder Instability Index score (100 possible) was 85, and the median score was 93. According to Samilson-Prieto classification of arthropathy of the shoulder, 39% were classified as normal, 27% as mild, 23% as moderate, and 11% as severe. The classification of arthropathy varied with observers and radiologic views. Age younger than 22 years at the primary dislocation meant less arthropathy at follow-up (P = .045). Conclusion: The degree of arthropathy 33 to 35 years after the B-L repair seems to follow the natural history of shoulder dislocation with respect to arthropathic joint degeneration. Postoperative restriction of external rotation does not increase later arthropathy.

  • 173.
    Gordon, Max
    et al.
    Karolinska Inst, Danderyd Hosp, Dept Clin Sci, Stockholm, Sweden..
    Rysinska, Agata
    Karolinska Inst, Danderyd Hosp, Dept Clin Sci, Stockholm, Sweden..
    Garland, Anne
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Surgical Sciences, Orthopaedics.
    Rolfson, Ola
    Registerctr VGR, Swedish Hip Arthroplasty Register, Gothenburg, Sweden.;Univ Gothenburg, Sahlgrenska Acad, Dept Orthoped, Inst Clin Sci, Gothenburg, Sweden.;Massachusetts Gen Hosp, Harris Orthoped Lab, Boston, MA 02114 USA.;Harvard Univ, Sch Med, Boston, MA USA..
    Aspberg, Sara
    Karolinska Inst, Danderyd Hosp, Dept Clin Sci, Stockholm, Sweden..
    Eisler, Thomas
    Karolinska Inst, Danderyd Hosp, Dept Clin Sci, Stockholm, Sweden..
    Garellick, Goran
    Registerctr VGR, Swedish Hip Arthroplasty Register, Gothenburg, Sweden.;Univ Gothenburg, Sahlgrenska Acad, Dept Orthoped, Inst Clin Sci, Gothenburg, Sweden..
    Stark, Andre
    Karolinska Inst, Danderyd Hosp, Dept Clin Sci, Stockholm, Sweden..
    Hailer, Nils P.
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Surgical Sciences, Orthopaedics.
    Sköldenberg, Olof
    Karolinska Inst, Danderyd Hosp, Dept Clin Sci, Stockholm, Sweden..
    Increased Long-Term Cardiovascular Risk After Total Hip Arthroplasty A Nationwide Cohort Study2016In: Medicine (Baltimore, Md.), ISSN 0025-7974, E-ISSN 1536-5964, Vol. 95, no 6, p. 1-7Article in journal (Refereed)
    Abstract [en]

    Total hip arthroplasty is a common and important treatment for osteoarthritis patients. Long-term cardiovascular effects elicited by osteoarthritis or the implant itself remain unknown. The purpose of the present study was to determine if there is an increased risk of late cardiovascular mortality and morbidity after total hip arthroplasty surgery. A nationwide matched cohort study with data on 91,527 osteoarthritis patients operated on, obtained from the Swedish Hip Arthroplasty Register. A control cohort (n = 270,688) from the general Swedish population was matched 1:3 to each case by sex, age, and residence. Mean follow-up time was 10 years (range, 7-21). The exposure was presence of a hip replacement for more than 5 years. The primary outcome was cardiovascular mortality after 5 years. Secondary outcomes were total mortality and re-admissions due to cardiovascular events. During the first 5 to 9 years, the arthroplasty cohort had a lower cardiovascular mortality risk compared with the control cohort. However, the risk in the arthroplasty cohort increased over time and was higher than in controls after 8.8 years (95% confidence interval [CI] 7.0-10.5). Between 9 and 13 years postoperatively, the hazard ratio was 1.11 (95% CI 1.05-1.17). Arthroplasty patients were also more frequently admitted to hospital for cardiovascular reasons compared with controls, with a rate ratio of 1.08 (95% CI 1.06-1.11). Patients with surgically treated osteoarthritis of the hip have an increased risk of cardiovascular morbidity and mortality many years after the operation when compared with controls.

  • 174. Gotherstrom, Cecilia
    et al.
    Westgren, Magnus
    Shaw, S. W. Steven
    Astrom, Eva
    Biswas, Arijit
    Byers, Peter H.
    Mattar, Citra N. Z.
    Graham, Gail E.
    Taslimi, Jahan
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Surgical Sciences, Orthopaedics.
    Ewald, Uwe
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Women's and Children's Health, Pediatrics.
    Fisk, Nicholas M.
    Yeoh, Allen E. J.
    Lin, Ju-Li
    Cheng, Po-Jen
    Choolani, Mahesh
    Le Blanc, Katarina
    Chan, Jerry K. Y.
    Pre- and Postnatal Transplantation of Fetal Mesenchymal Stem Cells in Osteogenesis Imperfecta: A Two-Center Experience2014In: Stem Cells Transnational Medicine, ISSN 2157-6564, Vol. 3, no 2, p. 255-264Article in journal (Refereed)
    Abstract [en]

    Osteogenesis imperfecta (OI) can be recognized prenatally with ultrasound. Transplantation of mesenchymal stem cells (MSCs) has the potential to ameliorate skeletal damage. We report the clinical course of two patients with OI who received prenatal human fetal MSC (hfMSC) transplantation and postnatal boosting with same-donor MSCs. We have previously reported on prenatal transplantation for OI type III. This patient was retransplanted with 2.8 x 10(6) same-donor MSCs per kilogram at 8 years of age, resulting in low-level engraftment in bone and improved linear growth, mobility, and fracture incidence. An infant with an identical mutation who did not receive MSC therapy succumbed at 5 months despite postnatal bisphosphonate therapy. A second fetus with OI type IV was also transplanted with 30 x 10(6) hfMSCs per kilogram at 31 weeks of gestation and did not suffer any new fractures for the remainder of the pregnancy or during infancy. The patient followed her normal growth velocity until 13 months of age, at which time longitudinal length plateaued. A postnatal infusion of 10 x 10(6) MSCs per kilogram from the same donor was performed at 19 months of age, resulting in resumption of her growth trajectory. Neither patient demonstrated alloreactivity toward the donor hfMSCs or manifested any evidence of toxicities after transplantation. Our findings suggest that prenatal transplantation of allogeneic hfMSCs in OI appears safe and is of likely clinical benefit and that retransplantation with same-donor cells is feasible. However, the limited experience to date means that it is not possible to be conclusive and that further studies are required.

  • 175.
    Grandfield, Kathryn
    et al.
    Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Applied Materials Sciences.
    Ericson, Fredric
    Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Applied Materials Sciences.
    Sanden, Bengt
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Surgical Sciences, Orthopaedics.
    Johansson, Carina
    School of health and medical sciences, Örebro University.
    Larsson, Sune
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Surgical Sciences, Orthopaedics.
    Botton, Gianluigi
    Dept of Materials Science and Engineering, McMaster University, Hamilton, Ontario, Kanada.
    Palmquist, Anders
    Dept of Biomaterials, Sahlgrenska Academy at University of Gothenburg.
    Thomsen, Peter
    Dept of Biomaterials, Sahlgrenska Academy at University of Gothenburg.
    Håkan, Engqvist
    Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Applied Materials Sciences.
    Ultrastructural characterization of the hydroxyapatite-coated pedicle screw and human bone interface2012In: International Journal of Nano and Biomaterials, ISSN 1752-8941, Vol. 4, no 1, p. 1-11Article in journal (Refereed)
  • 176. Gref, A
    et al.
    Rautiainen, S
    Gruzieva, O
    Håkansson, N
    Kull, I
    Pershagen, G
    Wickman, M
    Wolk, Alicja
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Surgical Sciences, Orthopaedics.
    Melén, E
    Bergström, A
    Dietary total antioxidant capacity in early school age and subsequent allergic disease.2017In: Clinical and Experimental Allergy, ISSN 0954-7894, E-ISSN 1365-2222, Vol. 47, no 6, p. 751-759Article in journal (Refereed)
    Abstract [en]

    BACKGROUND: Dietary antioxidant intake has been hypothesized to influence the development of allergic diseases; however, few prospective studies have investigated this association.

    OBJECTIVE: Our aim was to study the association between total antioxidant capacity (TAC) of the diet at age 8 years and the subsequent development of asthma, rhinitis and sensitization to inhalant allergens between 8 and 16 years, and to assess potential effect modification by known risk factors.

    METHODS: A total of 2359 children from the Swedish birth cohort BAMSE were included. Dietary TAC at age 8 years was estimated by combining information on the child's diet the past 12 months from a food frequency questionnaire with a database of common foods analysed with the oxygen radical absorbance capacity method. Classification of asthma and rhinitis was based on questionnaires, and serum IgE antibodies were measured at 8 and 16 years.

    RESULTS: A statistically significant inverse association was observed between TAC of the diet and incident sensitization to inhalant allergens (adjusted odds ratio: 0.73, 95% confidence interval: 0.55-0.97 for the third compared to the first tertile, P-value for trend = 0.031). Effect modification by traffic-related air pollution exposure was observed, with a stronger association between dietary TAC and sensitization among children with low traffic-related air pollution exposure (P-value for interaction = 0.029). There was no evidence for effect modification by GSTP1 or TNF genotypes, although these results should be interpreted with caution. No clear associations were observed between TAC and development of rhinitis or asthma, although a significant inverse association was observed for allergic asthma (ORadj 0.57, 95% CI 0.34-0.94).

    CONCLUSIONS AND CLINICAL RELEVANCE: Higher TAC of the diet in early school age may decrease the risk of developing sensitization to inhalant allergens from childhood to adolescence. These findings indicate that implementing an antioxidant-rich diet in childhood may contribute to the prevention of allergic disease.

  • 177.
    Grimfjärd, Per
    et al.
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Medicinska och farmaceutiska vetenskapsområdet, centrumbildningar mm, UCR-Uppsala Clinical Research Center. Vasteras Hosp, Uppsala, Sweden..
    Erlinge, David
    Lund Univ, Skane Univ Hosp, Lund, Sweden..
    Koul, Sasha
    Lund Univ, Skane Univ Hosp, Lund, Sweden..
    Lagerqvist, Bo
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Sciences, Cardiology.
    Svennblad, Bodil
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Medicinska och farmaceutiska vetenskapsområdet, centrumbildningar mm, UCR-Uppsala Clinical Research Center. Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Surgical Sciences, Orthopaedics.
    Varenhorst, Christoph
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Medicinska och farmaceutiska vetenskapsområdet, centrumbildningar mm, UCR-Uppsala Clinical Research Center.
    James, Stefan
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Medicinska och farmaceutiska vetenskapsområdet, centrumbildningar mm, UCR-Uppsala Clinical Research Center. Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Sciences, Cardiology.
    Low real-world early stent thrombosis rates in ST-elevation myocardial infarction patients and the use of bivalirudin, heparin alone or glycoprotein IIb/IIIa inhibitor treatment: A nationwide Swedish registry report2016In: American Heart Journal, ISSN 0002-8703, E-ISSN 1097-6744, Vol. 176, p. 78-82Article in journal (Refereed)
    Abstract [en]

    Background In recent studies of primary percutaneous coronary intervention (PCI), bivalirudin compared with heparin has been associated with increased risk of stent thrombosis (ST). Our aim was to describe incidence and outcome of definite, early ST in a large contemporary primary PCI population divided in antithrombotic therapy subgroups. Methods and Results A prospective, observational cohort study of all 31,258 ST-elevation myocardial infarction patients who received a stent in Sweden from January 2007 to July 2014 in the SWEDEHEART registry was conducted. Patients were divided into 3 groups: bivalirudin, heparin alone, or glycoprotein IIb/IIIa inhibitor treated. Primary outcome measure was incidence of definite early ST (within 30 days of PCI). Secondary outcomes included all-cause mortality. Incidence of early ST was low, regardless of bivalirudin, heparin alone, or glycoprotein IIb/IIIa inhibitor treatment (0.84%, 0.94%, and 0.83%, respectively). All-cause mortality at 1 year was 20.7% for all ST patients (n = 265), compared with 9.1% in those without ST (n = 31,286; P < .001). Patients with ST days 2-30 had numerically higher all-cause mortality at 1 year compared with patients with ST days 0-1 (23% vs 16%, P =.20). Conclusion In this real-world observational study of 31,258 ST-elevation myocardial infarction patients, the incidence of early ST was low, regardless of antithrombotic treatment strategy. Early ST was associated with increased mortality. Numerically higher all-cause mortality at 1 year was noted with ST days 2-30 compared with ST days 0-1 post-PCI.

  • 178.
    Grimfjärd, Per
    et al.
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Sciences, Cardiology. Västerås Univ, Dept Cardiol, Västerås, Sweden..
    Erlinge, David
    Lund Univ, Skane Univ Hosp, Dept Cardiol, Lund, Sweden..
    Koul, Sasha
    Lund Univ, Skane Univ Hosp, Dept Cardiol, Lund, Sweden..
    Lagerqvist, Bo
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Sciences, Cardiology. Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Medicinska och farmaceutiska vetenskapsområdet, centrumbildningar mm, UCR-Uppsala Clinical Research Center.
    Svennblad, Bodil
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Medicinska och farmaceutiska vetenskapsområdet, centrumbildningar mm, UCR-Uppsala Clinical Research Center. Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Surgical Sciences, Orthopaedics.
    Varenhorst, Christoph
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Sciences, Cardiology. Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Medicinska och farmaceutiska vetenskapsområdet, centrumbildningar mm, UCR-Uppsala Clinical Research Center.
    James, Stefan K.
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Sciences, Cardiology. Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Medicinska och farmaceutiska vetenskapsområdet, centrumbildningar mm, UCR-Uppsala Clinical Research Center.
    Unfractionated heparin versus bivalirudin in patients undergoing primary percutaneous coronary intervention: a SWEDEHEART study2017In: EuroIntervention, ISSN 1774-024X, E-ISSN 1969-6213, Vol. 12, no 16, p. 2009-2017Article in journal (Refereed)
    Abstract [en]

    Aims: The aim of the stud was to compare outcomes in unfractionated heparin (UM) and bivalirudintreated patients undergoing primary percutaneous coronary intervention (PPCI). Methods and results: This observational study contained 20,612 PPCT patients treated with either GM monotherapv or bivalirudin with or without concomitant UFE. Patients with oral anticoagulant or glycoprotein IIb/IIIa inhibitor (GPI) treatment were excluded. The primary outcome measure was definite early stent thrombosis (Si) that occurred at low and similar rates in UNA only and bivalirudin-treated patients: 0.9% vs. 0.8% (adjusted hazard ratio [HR] 1.08, 95% confidence interval [CI]: 0.7-1.65). All-cause death at 30 days occurred in 6.9% vs. 5.4% of patients (adjusted HR 1.23, 95% Cl: 1.05-1.44) and within 365 days in 12.1% vs. 8.9% (adjusted HR 1.34, 95% CI: 1.19-1.52) in the two groups, respectively. The incidence of major bleeding within 30 days was 0.8% vs. 0.6% (adjusted HR 1.54, 95% CI: 0.97-2.45). The incidence of reinfarction within 365 days and stroke within 30 days was similar between groups. Conclusions: In this large, nationwide observational study we found low and similar rates of early ST in UFH only and bivalirudin-treated patients undergoing primary PCI. Mortality was higher in IJFH compared with bivalirudin-treated patients.

  • 179.
    Grip, Olivia
    et al.
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Surgical Sciences, Vascular Surgery.
    Wanhainen, Anders
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Surgical Sciences, Vascular Surgery.
    Michaëlsson, Karl
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Surgical Sciences, Orthopaedics.
    Lindhagen, Lars
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Medicinska och farmaceutiska vetenskapsområdet, centrumbildningar mm, UCR-Uppsala Clinical Research Center.
    Björck, Martin
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Surgical Sciences, Vascular Surgery.
    Open versus endovascular revascularization in the treatment of acute lower limb ischaemia2018In: British Journal of Surgery, ISSN 0007-1323, E-ISSN 1365-2168, Vol. 105, no 12, p. 1598-1606Article in journal (Refereed)
    Abstract [en]

    Background: Consensus is lacking regarding intervention for patients with acute lower limb ischaemia (ALI). The aim was to study amputation-free survival in patients treated for ALI by either primary open or endovascular revascularization.

    Methods: The Swedish Vascular Registry (Swedvasc) was combined with the Population Registry and National Patient Registry to determine follow-up on mortality and amputation rates. Revascularization techniques were compared by propensity score matching 1:1.

    Results: Of 9736 patients who underwent open surgery and 6493 who had endovascular treatment between 1994 and 2014, 3365 remained in each group after propensity score matching. Results are from the matched cohort only. Mean age of the patients was 74⋅7 years; 47⋅5 per cent were women and mean follow-up was 4⋅3 years. At 30-day follow-up, the endovascular group had better patency (83⋅0 versus 78⋅6 per cent; P < 0⋅001). Amputation rates were similar at 30 days (7⋅0 per cent in the endovascular group versus 8⋅2 per cent in the open group; P = 0⋅113) and at 1 year (13⋅8 versus 14⋅8 per cent; P = 0⋅320). The mortality rate was lower after endovascular treatment, at 30 days (6⋅7 versus 11⋅1 per cent; P < 0⋅001) and after 1 year (20⋅2 versus 28⋅6 per cent; P < 0⋅001). Accordingly, endovascular treatment had better amputation-free survival at 30 days (87⋅5 versus 82⋅1 per cent; P < 0⋅001) and 1 year (69⋅9 versus 61⋅1 per cent; P < 0⋅001). The number needed to treat to prevent one death within the rst year was 12 with an endovascular compared with an open approach. Five years after surgery, endovascular treatment still had improved survival (HR 0⋅78, 99 per cent c.i. 0⋅70 to 0⋅86) but the difference between the treatment groups occurred mainly in the rst year.

    Conclusion: Primary endovascular treatment for ALI appeared to reduce mortality compared with open surgery, without any difference in the risk of amputation.

  • 180. Grundberg, Elin
    et al.
    Adoue, Veronique
    Kwan, Tony
    Ge, Bing
    Duan, Qing Ling
    Lam, Kevin C. L.
    Koka, Vonda
    Kindmark, Andreas
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Sciences.
    Weiss, Scott T.
    Tantisira, Kelan
    Mallmin, Hans
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Surgical Sciences, Orthopaedics.
    Raby, Benjamin A.
    Nilsson, Olle
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Surgical Sciences, Orthopaedics.
    Pastinen, Tomi
    Global Analysis of the Impact of Environmental Perturbation on cis-Regulation of Gene Expression2011In: PLoS Genetics, ISSN 1553-7390, Vol. 7, no 1, p. e1001279-Article in journal (Refereed)
    Abstract [en]

    Genetic variants altering cis-regulation of normal gene expression (cis-eQTLs) have been extensively mapped in human cells and tissues, but the extent by which controlled, environmental perturbation influences cis-eQTLs is unclear. We carried out large-scale induction experiments using primary human bone cells derived from unrelated donors of Swedish origin treated with 18 different stimuli (7 treatments and 2 controls, each assessed at 2 time points). The treatments with the largest impact on the transcriptome, verified on two independent expression arrays, included BMP-2 (t = 2h), dexamethasone (DEX) (t = 24h), and PGE(2) (t = 24h). Using these treatments and control, we performed expression profiling for 18,144 RefSeq transcripts on biological replicates of the complete study cohort of 113 individuals (n(total) = 782) and combined it with genome-wide SNP-genotyping data in order to map treatment-specific cis-eQTLs (defined as SNPs located within the gene +/- 250 kb). We found that 93% of cis-eQTLs at 1% FDR were observed in at least one additional treatment, and in fact, on average, only 1.4% of the cis-eQTLs were considered as treatment-specific at high confidence. The relative invariability of cis-regulation following perturbation was reiterated independently by genome-wide allelic expression tests where only a small proportion of variance could be attributed to treatment. Treatment-specific cis-regulatory effects were, however, 2- to 6-fold more abundant among differently expressed genes upon treatment. We further followed-up and validated the DEX-specific cis-regulation of the MYO6 and TNC loci and found top cis-regulatory variants located 180 kb and 250 kb upstream of the transcription start sites, respectively. Our results suggest that, as opposed to tissue-specificity of cis-eQTLs, the interactions between cellular environment and cis-variants are relatively rare (similar to 1.5%), but that detection of such specific interactions can be achieved by a combination of functional genomic approaches as described here.

  • 181.
    Grundberg, Elin
    et al.
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Sciences.
    Brändström, Helena
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Sciences.
    Lam, Kevin C. L.
    Gurd, Scott
    Ge, Bing
    Harmsen, Eef
    Kindmark, Andreas
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Sciences.
    Ljunggren, Östen
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Sciences.
    Mallmin, Hans
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Surgical Sciences, Orthopaedics.
    Nilsson, Olle
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Surgical Sciences, Orthopaedics.
    Pastinen, Tomi
    Systematic assessment of the human osteoblast transcriptome in resting and induced primary cells2008In: Physiological Genomics, ISSN 1094-8341, E-ISSN 1531-2267, Vol. 33, no 3, p. 301-11Article in journal (Refereed)
    Abstract [en]

    Osteoblasts are key players in bone remodeling. The accessibility of human primary osteoblast-like cells (HObs) from bone explants makes them a lucrative model for studying molecular physiology of bone turnover, for discovering novel anabolic therapeutics, and for mesenchymal cell biology in general. Relatively little is known about resting and dynamic expression profiles of HObs, and to date no studies have been conducted to systematically assess the osteoblast transcriptome. The aim of this study was to characterize HObs and investigate signaling cascades and gene networks with genomewide expression profiling in resting and bone morphogenic protein (BMP)-2- and dexamethasone-induced cells. In addition, we compared HOb gene expression with publicly available samples from the Gene Expression Omnibus. Our data show a vast number of genes and networks expressed predominantly in HObs compared with closely related cells such as fibroblasts or chondrocytes. For instance, genes in the insulin-like growth factor (IGF) signaling pathway were enriched in HObs (P = 0.003) and included the binding proteins (IGFBP-1, -2, -5) and IGF-II and its receptor. Another HOb-specific expression pattern included leptin and its receptor (P < 10(-8)). Furthermore, after stimulation of HObs with BMP-2 or dexamethasone, the expression of several interesting genes and pathways was observed. For instance, our data support the role of peripheral leptin signaling in bone cell function. In conclusion, we provide the landscape of tissue-specific and dynamic gene expression in HObs. This resource will allow utilization of osteoblasts as a model to study specific gene networks and gene families related to human bone physiology and diseases.

  • 182.
    Grundberg, Elin
    et al.
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Sciences.
    Brändström, Helena
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Sciences.
    Ribom, Eva L
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Surgical Sciences, Orthopaedics.
    Ljunggren, Östen
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Sciences.
    Mallmin, Hans
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Surgical Sciences, Orthopaedics.
    Kindmark, Andreas
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Sciences.
    Genetic variation in the human vitamin D receptor is associated with muscle strength, fat mass and body weight in Swedish women2004In: European Journal of Endocrinology, ISSN 0804-4643, E-ISSN 1479-683X, Vol. 150, no 3, p. 323-328Article in journal (Refereed)
    Abstract [en]

    Objective: Bone mineral density (BMD) is under strong genetic control and a number of candidategenes have been associated with BMD. Both muscle strength and body weight are considered to beimportant predictors of BMD but far less is known about the genes affecting muscle strength andfat mass. The purpose of this study was to investigate the poly adenosine (A) repeat and the BsmISNP in the vitamin D receptor (VDR) in relation to muscle strength and body composition in healthywomen.

    Design: A population-based study of 175 healthy women aged 20–39 years was used.

    Methods: The polymorphic regions in the VDR gene (the poly A repeat and the BsmI SNP) were amplifiedby PCR. Body mass measurements (fat mass, lean mass, body weight and body mass index) andmuscle strength (quadriceps, hamstring and grip strength) were evaluated.

    Results: Individuals with shorter poly A repeat, ss and/or absence of the linked BsmI restriction site(BB) have higher hamstring strength (ss vs LL, P ¼ 0.02), body weight (ss vs LL, P ¼ 0.049) andfat mass (ss vs LL, P ¼ 0.04) compared with women with a longer poly A repeat (LL) and/or thepresence of the linked BsmI restriction site (bb).

    Conclusions: Genetic variation in the VDR is correlated with muscle strength, fat mass and bodyweight in premenopausal women. Further functional studies on the poly A microsatellite areneeded to elucidate whether this is the functionally relevant locus or if the polymorphism is in linkagedisequilibrium with a functional variant in a closely situated gene further downstream of the VDR30UTR.

  • 183.
    Grundberg, Elin
    et al.
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Sciences.
    Kwan, Tony
    Ge, Bing
    Lam, Kevin C.
    Koka, Vonda
    Kindmark, Andreas
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Sciences.
    Mallmin, Hans
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Surgical Sciences, Orthopaedics.
    Dias, Joana
    Verlaan, Dominique J.
    Ouimet, Manon
    Sinnett, Daniel
    Rivadeneira, Fernando
    Estrada, Karol
    Hofman, Albert
    van Meurs, Joyce M.
    Uitterlinden, André
    Beaulieu, Patrick
    Graziani, Alexandru
    Harmsen, Eef
    Ljunggren, Östen
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Sciences.
    Ohlsson, Claes
    Mellström, Dan
    Karlsson, Magnus K.
    Nilsson, Olle
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Surgical Sciences, Orthopaedics.
    Pastinen, Tomi
    Population genomics in a disease targeted primary cell model2009In: Genome Research, ISSN 1088-9051, E-ISSN 1549-5469, Vol. 19, no 11, p. 1942-1952Article in journal (Refereed)
    Abstract [en]

    The common genetic variants associated with complex traits typically lie in noncoding DNA and may alter gene regulation in a cell type-specific manner. Consequently, the choice of tissue or cell model in the dissection of disease associations is important. We carried out an expression quantitative trait loci (eQTL) study of primary human osteoblasts (HOb) derived from 95 unrelated donors of Swedish origin, each represented by two independently derived primary lines to provide biological replication. We combined our data with publicly available information from a genome-wide association study (GWAS) of bone mineral density (BMD). The top 2000 BMD-associated SNPs (P < approximately 10(-3)) were tested for cis-association of gene expression in HObs and in lymphoblastoid cell lines (LCLs) using publicly available data and showed that HObs have a significantly greater enrichment (threefold) of converging cis-eQTLs as compared to LCLs. The top 10 BMD loci with SNPs showing strong cis-effects on gene expression in HObs (P = 6 x 10(-10) - 7 x 10(-16)) were selected for further validation using a staged design in two cohorts of Caucasian male subjects. All 10 variants were tested in the Swedish MrOS Cohort (n = 3014), providing evidence for two novel BMD loci (SRR and MSH3). These variants were then tested in the Rotterdam Study (n = 2090), yielding converging evidence for BMD association at the 17p13.3 SRR locus (P(combined) = 5.6 x 10(-5)). The cis-regulatory effect was further fine-mapped to the proximal promoter of the SRR gene (rs3744270, r(2) = 0.5, P = 2.6 x 10(-15)). Our results suggest that primary cells relevant to disease phenotypes complement traditional approaches for prioritization and validation of GWAS hits for follow-up studies.

  • 184.
    Grundberg, Elin
    et al.
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Sciences.
    Åkesson, Kristina
    Kindmark, Andreas
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Sciences.
    Gerdhem, Paul
    Holmberg, Anna
    Johnell, Olof
    Mellström, Dan
    Ljunggren, Östen
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Sciences.
    Orwoll, Eric
    Ohlsson, Claes
    Mallmin, Hans
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Surgical Sciences, Orthopaedics.
    Brändström, Helena
    Site- and gender-specific association between the deletion/insertion polymorphism in the ERα-cofactor RIZ gene and bone mineral density in elderly men and women2012Article in journal (Refereed)
  • 185. Grundvold, I.
    et al.
    Bodegard, J.
    Nilsson, P. M.
    Svennblad, Bodil
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Medicinska och farmaceutiska vetenskapsområdet, centrumbildningar mm, UCR-Uppsala Clinical Research Center. Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Surgical Sciences, Orthopaedics.
    Johansson, G.
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Public Health and Caring Sciences.
    Ostgren, C. J.
    Sundström, Johan
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Medicinska och farmaceutiska vetenskapsområdet, centrumbildningar mm, UCR-Uppsala Clinical Research Center.
    Body mass index and changes in weight are associated with risk of atrial fibrillation and cardiovascular mortality: a longitudinal cohort study of 7,169 patients with newly diagnosed type 2 diabetes2014In: European Heart Journal, ISSN 0195-668X, E-ISSN 1522-9645, Vol. 35, p. 539-539Article in journal (Refereed)
  • 186. Grundvold, Irene
    et al.