title: Does practice variation matter?
authors.forename: Mark A
authors.initials: MA
authors.lastname: Hlatky
authors.forename: Anthony N
authors.initials: AN
authors.lastname: DeMaria
mesh_terms: D006328:Cardiac Catheterization / Q000706:statistics & numerical data*; D003324:Coronary Artery Disease / Q000175:diagnosis*; D003952:Diagnostic Imaging / Q000706:statistics & numerical data*; D005080:Exercise Test / Q000706:statistics & numerical data*; D005260:Female; D006801:Humans; D008297:Male; D062645:Percutaneous Coronary Intervention
keywords: diagnostic catheterization; patient outcomes; site-level patterns; stress testing