ArticleClinical epidemiology2021
Adaptation of the Charlson Comorbidity Index for Register-Based Research in Sweden.
Article in Clinical epidemiology, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. Cited by 171 papers.
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Who cites it
171 citing papers in PubMed.
- Variation in fecal hemoglobin concentrations: Cross-sectional analysis of a screening trial and a screening program in Sweden.Journal of medical screening · 2026Trial
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- Cohort profile: the Swedish Evaluation Through Follow-up Study of Learning Later in Life (UGU-LIFE).BMJ open · 2026Article
- Platelet P2Y12 inhibitor use and risk of colorectal cancer incidence and colorectal cancer-related mortality: a Swedish registry-based cohort study.BMC gastroenterology · 2026Article
- Safe homecoming intervention after hospital discharge: a retrospective cohort study of mortality and readmission among patients 75 years or older in Sweden.BMC geriatrics · 2026Observational
- Increased Out-of-Hospital Cardiac Arrest Risk in Cancer: Evidence From 800,000 Patients and 3.7 Million Controls.JACC. Advances · 2026Article
- medicalcoder: a unified and longitudinally aware framework for International Classification of Diseases code-based comorbidity assessment in R.JAMIA open · 2026Article
- Etiology and Outcomes of Bloodstream Infections by Immunosuppression Type: A Population-Based Laboratory Surveillance Study.Open forum infectious diseases · 2026Article
- Long-Term Mortality and Morbidity After Pediatric Sepsis.Open forum infectious diseases · 2026Article
- Increased Antidepressant Use after Intensive Care for Aneurysmal Subarachnoid Haemorrhage: A Machine-Learning-Enhanced Propensity-Matched Nationwide Cohort Study.Neurocritical care · 2026Article
- Derivation and Validation of Charlson, Elixhauser and RxRisk Cost-Based Comorbidity Indices: A Register-Based Study of 350,000 Individuals Over 11 Years.PharmacoEconomics · 2026Article
- Physical activity prior to transient ischaemic attack and risk of subsequent cerebrovascular events: a Swedish register-based study.BMJ open · 2026Article
- Comorbidity-adjusted life expectancy using comprehensive summary measures of medical history: nationwide, population-based study in Sweden.European journal of epidemiology · 2026Article
- Association of Intramuscular Fat Infiltration With Incident Venous Thromboembolism: A Population-Based Cohort Study.Journal of cachexia, sarcopenia and muscle · 2026Article
- AVD is an effective chemotherapy backbone in first-line treatment of older patients with classical Hodgkin lymphoma.Blood advances · 2026Article
- Post-COVID-19 Condition Diagnosis among Older People: Findings from Swedish National Register Data.Gerontology · 2026Article
- Article
- Real-world patterns of healthcare use, costs, and survival in diffuse large B-cell lymphoma: a nationwide Swedish register study.The European journal of health economics : HEPAC : health economics in prevention and care · 2026Article
- Renal and Cardiovascular Complications Following Type 2 Diabetes Mellitus in People With and Without HIV: Data From the Cohort Study on Morbidity and HIV in Sweden (COSMOHS) Between 2010 and 2024.Clinical infectious diseases : an official publication of the Infectious Diseases Society of America · 2026Article
111 more citing papers are in PubMed but not listed here.
Corrections and comments
- Erratum issued
Authors and funding
16 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
purposeComorbidity indices are often used to measure comorbidities in register-based research. We aimed to adapt the Charlson comorbidity index (CCI) to a Swedish setting.
methodsFour versions of the CCI were compared and evaluated by disease-specific experts.
resultsWe 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.
conclusionThis work may provide an integrated and efficient coding algorithm for CCI to be used in medical register-based research in Sweden.
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