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  • 1. Aruvee, Eve
    et al.
    Engstrand, Ulla
    Olsson, Ulf
    Uppsala University, Humanistisk-samhällsvetenskapliga vetenskapsområdet, Faculty of Social Sciences, Department of Information Science.
    Matemaatilise statistika põhimõisted bioloogilistele erialadele: Mathematical statistics with biological applications, in Estonian2000Book (Other scientific)
  • 2. Janson, Harald
    et al.
    Olsson, Ulf
    Uppsala University, Humanistisk-samhällsvetenskapliga vetenskapsområdet, Faculty of Social Sciences, Department of Information Science.
    A Measure of Agreement for Interval or Nominal Multivariate Observations By Different Sets of Judges.2004In: Educational and Psychological Measurement, Vol. 64, no 1, p. 62-70Article in journal (Refereed)
  • 3.
    Liss, Per
    et al.
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Oncology, Radiology and Clinical Immunology, Radiology.
    Eklöf, Hampus
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Oncology, Radiology and Clinical Immunology, Radiology.
    Hellberg, Olof
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Sciences.
    Hägg, Anders
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Sciences.
    Boström-Ardin, Annika
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Surgical Sciences.
    Löfberg, Anne-Marie
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Oncology, Radiology and Clinical Immunology, Radiology.
    Olsson, Ulf
    Uppsala University, Disciplinary Domain of Humanities and Social Sciences, Faculty of Social Sciences, Department of Information Science.
    Örndahl, Per
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Sciences.
    Nilsson, Helena
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Sciences.
    Hansell, Peter
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Cell Biology.
    Eriksson, Lars-Gunnar
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Oncology, Radiology and Clinical Immunology, Radiology.
    Bergqvist, David
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Surgical Sciences.
    Nyman, Rickard
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Oncology, Radiology and Clinical Immunology, Radiology.
    Renal effects of CO2 and iodinated contrast media in patients undergoing renovascular intervention: a prospective, randomized study2005In: Journal of Vascular and Interventional Radiology, ISSN 1051-0443, E-ISSN 1535-7732, Vol. 16, no 1, p. 57-65Article in journal (Refereed)
    Abstract [en]

    PURPOSE: CO2 gas has been proposed for use instead of iodinated contrast media in angiographic examinations in patients at risk of developing renal failure from contrast media. The influence of intraarterial injection of CO2 with small added amounts of ioxaglate (200 mgI/mL) or ioxaglate alone on renal function in patients with suspected renal artery stenosis was studied in a prospective, randomized study. MATERIALS AND METHODS: One hundred twenty-three patients underwent renovascular intervention (n = 83) and/or renal angiography (n = 40) for suspected renal artery stenosis. Patients with a serum creatinine concentration less than 200 micromol/L (n = 82) were randomized prospectively to receive CO2 with small added amounts of ioxaglate (n = 37) or only ioxaglate (n = 45). Patients with serum creatinine levels greater than 200 micromol/L (n = 41) were not randomized and initially received CO2. Serum creatinine concentrations were measured within 1 day before and 1 day, 2 days, and 2-3 weeks after the procedure. RESULTS: The amount of injected CO2 did not relate to an increase in serum creatinine level. In the randomized groups, and also when the whole patient sample was considered, the amount of injected iodine was significantly correlated (P = .011) with an increase in serum creatinine level and a decrease in estimated creatinine clearance after 2 days. Among the randomized patients, one in the CO2 group and three in the ioxaglate group had a more than 25% increase in serum creatinine level within the first 2 days after the intervention. CONCLUSION: The risk of impairment of renal function is lower after injection of CO2 with small amounts of added ioxaglate compared with injection of a larger amount of ioxaglate alone. The larger the amount of administered iodinated contrast medium, the greater the risk of development of renal failure.

  • 4.
    Nevéus, Tryggve
    et al.
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Women's and Children's Health.
    Cnattingius, Sven
    Olsson, Ulf
    Uppsala University, Disciplinary Domain of Humanities and Social Sciences, Faculty of Social Sciences, Department of Information Science.
    Hetta, Jerker
    Sleep habits and sleep problems among a community sample of schoolchildren.2001In: Acta Pædiatrica, Vol. 90, p. 1450-1455Article in journal (Refereed)
  • 5. Nincovic, Vladimir
    et al.
    Olsson, Ulf
    Uppsala University, Humanistisk-samhällsvetenskapliga vetenskapsområdet, Faculty of Social Sciences, Department of Information Science.
    Pettersson, Jan
    Mixing barley cultivars affect aphid host plant acceptance in field experiments.2002In: Entomologia Experimentalis et Applicata,, Vol. 102, p. 177-182Article in journal (Refereed)
  • 6.
    Olsson, Ulf
    Uppsala University, Humanistisk-samhällsvetenskapliga vetenskapsområdet, Faculty of Social Sciences, Department of Information Science.
    A program for advanced biostatistics courses.2003In: In: Ulf Olsson and Jaak Sikk (Eds.): Fourth Nordic-Baltic Agrometrics Conference, Uppsala, Sweden, June 15-17, 2003., 2003Conference paper (Other scientific)
  • 7.
    Olsson, Ulf
    Uppsala University, Humanistisk-samhällsvetenskapliga vetenskapsområdet, Faculty of Social Sciences, Department of Information Science.
    Confidence intervals for the mean of a log-normal distribution.2005In: Journal of Statistics Education, Vol. 13, no 1, p. 6-Article in journal (Refereed)
    Abstract [en]

    Methods for calculating confidence intervals for the mean are reviewed for the case where the data come from a log-normal distribution. In a simulation study it is found that a variation of the method suggested by Cox works well in practice. An approach based on Generalized confidence intervals also works well. A comparison of our results with those of Zhou and Gao (1997) reveals that it may be preferable to base the interval on t values, rather than on z values.

  • 8.
    Olsson, Ulf
    Uppsala University, Humanistisk-samhällsvetenskapliga vetenskapsområdet, Faculty of Social Sciences, Department of Information Science.
    Generalized linear models: an applied approach2002Book (Other scientific)
  • 9.
    Olsson, Ulf
    et al.
    Uppsala University, Humanistisk-samhällsvetenskapliga vetenskapsområdet, Faculty of Social Sciences, Department of Information Science.
    Englund, Jan-Eric
    Engstrand, Ulla
    Biometri: Grundläggande biologisk statistik.2005Book (Other scientific)
  • 10.
    Olsson, Ulf
    et al.
    Uppsala University, Humanistisk-samhällsvetenskapliga vetenskapsområdet, Faculty of Social Sciences, Department of Information Science.
    Engstrand, Ulla
    Rupsys, Petras
    Statistiniai metodai su Minitab ir SAS.: Statistical methods with Minitab and SAS; in Lithuanian2000Book (Other scientific)
  • 11.
    Olsson, Ulf
    et al.
    Uppsala University, Humanistisk-samhällsvetenskapliga vetenskapsområdet, Faculty of Social Sciences, Department of Information Science.
    Sikk, Jaak
    Fourth Nordic-Baltic Agrometrics Conference, Uppsala, Sweden, June 15-17, 2003. Conference proceedings.2003Conference proceedings (editor) (Refereed)
  • 12. von Euler, Henrik
    et al.
    Einarsson, Roland
    Olsson, Ulf
    Uppsala University, Humanistisk-samhällsvetenskapliga vetenskapsområdet, Faculty of Social Sciences, Department of Information Science.
    Lagerstedt, Anne-Sofie
    Eriksson, Staffan
    Serum Thymidine Kinase Activity in Dogs with Malignant Lymphoma. A Potent Marker for Prognosis and Monitoring the Disease.2004In: Journal of Veterinary Internal Medicine, Vol. 18, p. 696-702Article in journal (Refereed)
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