Medication Use is a Better Predictor of Length of Hospital Stay in Total Hip Arthroplasty Than the American Society of Anesthetists (ASA) Score

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

Performance of Comorbidity Scores to Control for Confounding in Epidemiologic Studies using Claims Data

American Journal of Epidemiology · 2001 · 718 citations · Full text

Public Health, Pharmacotherapy, Clinical Epidemiology +16

A Chronic Disease Score with Empirically Derived Weights

Daniel O. Clark, Michael Von Korff, Kathleen Saunders et al. · Medical Care · 1995 · 557 citations

Management, Pharmacoeconomics, Geriatric Assessment +16

Clinical Characteristics and Outcomes of Medicare Patients Undergoing Total Hip Arthroplasty, 1991-2008

Peter Cram · JAMA · 2011 · 321 citations

Medicine, Orthopaedic Surgery, Orthopedic Surgery +16

National Surgical Quality Improvement Program (NSQIP) Risk Factors Can Be Used to Validate American Society of Anesthesiologists Physical Status Classification (ASA PS) Levels

Daniel L. Davenport, Edwin A. Bowe, William G. Henderson et al. · Annals of Surgery · 2006 · 296 citations · Full text

Medicine, Anesthesiology, Surgery +14