Changes in patients undergoing coronary artery bypass grafting: 1987–1990

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

Stratification of Morbidity and Mortality Outcome by Preoperative Risk Factors in Coronary Artery Bypass Patients

Thomas L. Higgins · JAMA · 1992 · 805 citations

Medicine, Perioperative Medicine, Surgery +15

Mortality and Reoperation after Open and Transurethral Resection of the Prostate for Benign Prostatic Hyperplasia

Noralou P. Roos, John E. Wennberg, David J. Malenka et al. · New England Journal of Medicine · 1989 · 661 citations

Medicine, Surgery, Urology +12

Multivariate prediction of in-hospital mortality associated with coronary artery bypass graft surgery. Northern New England Cardiovascular Disease Study Group.

George O'connor, Stephen K. Plume, Elaine M. Olmstead et al. · Circulation · 1992 · 410 citations · Full text

Medicine, Cardiology, Surgery +17

A Regional Prospective Study of In-Hospital Mortality Associated With Coronary Artery Bypass Grafting

Gerald T. O’Connor · JAMA · 1991 · 387 citations

Medicine, Cardiology, Surgery +12