title: Propensity scores for rare outcomes and common treatments.
authors.forename: W T
authors.initials: WT
authors.lastname: Longstreth
authors.forename: Carol E
authors.initials: CE
authors.lastname: Fahrenbruch
authors.forename: Thomas D
authors.initials: TD
authors.lastname: Koepsell
mesh_terms: D003627:Data Interpretation, Statistical; D006801:Humans; D016032:Randomized Controlled Trials as Topic / Q000706:statistics & numerical data*; D016896:Treatment Outcome