Assessing the costs of chronic obstructive pulmonary disease: The state medicaid perspective

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 · 48.8K citations

Prognostic Assessment, Longitudinal Studies, Prognostic Comorbidity +11

Adapting a clinical comorbidity index for use with ICD-9-CM administrative databases

Richard A. Deyo · Journal of Clinical Epidemiology · 1992 · 10.4K citations

Primary Care, Psychiatry, Health Policy +13

Standards for the diagnosis and treatment of patients with COPD: a summary of the ATS/ERS position paper

Bartolomé R. Celli, William MacNee, Àlvar Agustí et al. · European Respiratory Journal · 2004 · 4.4K citations · Full text

Acute Lung Injury, Pulmonary Care, Advanced Lung Disease +21

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

Differing Perspectives, Psychiatry, Health Policy +13

Effects of smoking intervention and the use of an inhaled anticholinergic bronchodilator on the rate of decline of FEV1. The Lung Health Study

Nicholas R. Anthonisen · JAMA · 1994 · 1.6K citations

Tobacco Cessation, Asthma, Pulmonary Care +19