Racial and socioeconomic disparities in adherence to preventive health services for ovarian cancer survivors

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

Validation of a combined comorbidity index

Mary E. Charlson, Ted P. Szatrowski, Janey C. Peterson et al. · Journal of Clinical Epidemiology · 1994 · 6.6K citations

Education, Health Sciences, Internal Medicine +12

Development of a comorbidity index using physician claims data

Carrie N. Klabunde, Arnold L. Potosky, Julie Legler et al. · Journal of Clinical Epidemiology · 2000 · 1.9K citations

Medicine, Internal Medicine, Clinical Epidemiology +13

Presentation adapting a clinical comorbidity index for use with ICD-9-CM administrative data: Differing perspectives

Patrick S. Romano, Leslíe L. Roos, James G. Jollis · Journal of Clinical Epidemiology · 1993 · 1.7K citations

Health Professions, Health Sciences, Clinical Classification Systems +13

Overview of the SEER-Medicare data: content, research applications, and generalizability to the United States elderly population.

Joan L. Warren, Carrie N. Klabunde, Deborah Schrag et al. · PubMed · 2002 · 1.7K citations

Medicine, Geriatric Medicine, Epidemiology +15