Functional Status Impairment Is Associated With Unplanned Readmissions

An Introduction to Propensity Score Methods for Reducing the Effects of Confounding in Observational Studies

Peter C. Austin · Multivariate Behavioral Research · 2011 · 11.2K citations · Full text

Treatment Effect, Quasi-experiment, Causal Inference +21

Comorbidity Measures for Use with Administrative Data

Anne Elixhauser, Claudia Steiner, D.R. Harris et al. · Medical Care · 1998 · 9.6K citations

Reducing Bias in Observational Studies Using Subclassification on the Propensity Score

Paul R. Rosenbaum, Donald B. Rubin · Journal of the American Statistical Association · 1984 · 3.2K citations

Treatment Effect, Preventive Cardiology, Quasi-experiment +17

Reducing Bias in Observational Studies Using Subclassification on the Propensity Score

Paul R. Rosenbaum, Donald B. Rubin · Journal of the American Statistical Association · 1984 · 3K citations

Treatment Effect, Quasi-experiment, Causal Inference +17

Frailty as a Predictor of Surgical Outcomes in Older Patients

Martin A. Makary, Dorry L. Segev, Peter J. Pronovost et al. · Journal of the American College of Surgeons · 2010 · 2.1K citations