How to weight chronic diseases in multimorbidity indices? Development of a new method on the basis of individual data from five population-based studies

A new method of classifying prognostic comorbidity in longitudinal studies: Development and validation

Mary E. Charlson, Peter Pompei, Kathy L. Aleš et al. · Journal of Chronic Diseases · 1987 · 49.9K citations

Public Health, Biostatistics, Clinical Classification Systems +15

The self‐administered comorbidity questionnaire: A new method to assess comorbidity for clinical and health services research

Gerold Stucki, Matthew H. Liang, Anne H. Fossel et al. · Arthritis Care & Research · 2003 · 1.8K citations

Public Affairs, Health Sciences, Health Assessment +16

Agreement between self-report questionnaires and medical record data was substantial for diabetes, hypertension, myocardial infarction and stroke but not for heart failure

Yuji Okura, Lynn H. Urban, Douglas W. Mahoney et al. · Journal of Clinical Epidemiology · 2004 · 1.2K citations

Medicine, Cardiology, Internal Medicine +12

Can Comorbidity Be Measured By Questionnaire Rather than Medical Record Review?

Jeffrey N. Katz, Lily Chang, Anne H. Fossel et al. · Medical Care · 1996 · 1K citations

Education, Internal Medicine, Electronic Health Records +16

A chronic disease score from automated pharmacy data

Michael Von Korff, Edward H. Wagner, Kathleen Saunders · Journal of Clinical Epidemiology · 1992 · 965 citations

Computing, Health Informatics, Pharmacy Practice +13