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Karolinska Inst, Global & Sexual Hlth Res Grp GloSH, Dept Global Publ Hlth, Stockholm, Sweden.;Lund Univ, Fac Med, Dept Clin Sci Lund, Resp Med & Allergol, Lund, Sweden..
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Karolinska Univ Hosp, Dept Upper GI Dis, Div Hepatol, Stockholm, Sweden.;Karolinska Inst, Dept Med, Clin Epidemiol Div, Stockholm, Sweden.;Karolinska Huddinge Inst, Dept Med, Stockholm, Sweden..
Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Sciences, Cardiology. Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Disciplinary Domain of Medicine and Pharmacy, research centers etc., Uppsala Clinical Research Center (UCR).
Umeå Univ, Dept Publ Hlth & Clin Med, Umeå, Sweden..
Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Surgical Sciences, Medical epidemiology.
Karolinska Inst, Dept Med Epidemiol, Stockholm, Sweden..
Karolinska Univ Hosp, Karolinska Inst, Neuropediat Unit, Dept Womens & Childrens Hlth, Stockholm, Sweden.;Linköping Univ, Div Childrens & Womens Hlth, Dept Biomed & Clin Sci, Linköping, Sweden..
Lund Univ, Ctr Primary Hlth Care Res, Dept Clin Sci, Lund, Sweden..
Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Sciences, Clinical Epidemiology. Univ New South Wales, George Inst Global Hlth, Sydney, NSW, Australia.;Icahn Sch Med Mt Sinai, Dept Family Med & Community Hlth, Dept Populat Hlth Sci & Policy, New York, NY 10029 USA. Shimane Univ, Ctr Community Based Healthcare Res & Educ CoHRE, Sch Med, Dept Funct Pathol, Matsue, Shimane, Japan..
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2021 (English)In: Clinical Epidemiology, ISSN 1179-1349, E-ISSN 1179-1349, Vol. 13, p. 21-41Article in journal (Refereed) Published
Abstract [en]
Purpose: Comorbidity indices are often used to measure comorbidities in register-based research. We aimed to adapt the Charlson comorbidity index (CCI) to a Swedish setting.
Methods: Four versions of the CCI were compared and evaluated by disease-specific experts.
Results: We created a cohesive coding system for CCI to 1) harmonize the content between different international classification of disease codes (ICD-7,8,9,10), 2) delete incorrect codes, 3) enhance the distinction between mild, moderate or severe disease (and between diabetes with and without end-organ damage), 4) minimize duplication of codes, and 5) briefly explain the meaning of individual codes in writing.
Conclusion: This work may provide an integrated and efficient coding algorithm for CCI to be used in medical register-based research in Sweden.
Place, publisher, year, edition, pages
Dove Medical PressDOVE MEDICAL PRESS LTD, 2021
Keywords
Charlson comorbidity score, comorbidity, disease, epidemiology, public health, Sweden
National Category
Public Health, Global Health, Social Medicine and Epidemiology
Identifiers
urn:nbn:se:uu:diva-439831 (URN)10.2147/CLEP.S282475 (DOI)000614055700001 ()33469380 (PubMedID)
2021-04-122021-04-122024-01-15Bibliographically approved