title: Registry studies for improving the quality of cardiovascular care: the role of variance components.
authors.forename: Sharon-Lise T
authors.initials: SL
authors.lastname: Normand
mesh_terms: D002303:Cardiac Output, Low / Q000453:epidemiology*; D001026:Coronary Artery Bypass / Q000009:adverse effects*; D005260:Female; D006331:Heart Diseases / Q000628:therapy*; D006333:Heart Failure / Q000453:epidemiology*; D006761:Hospitals / Q000592:standards*; D006801:Humans; D008297:Male; D010043:Outcome and Process Assessment, Health Care / Q000592:standards*; D062645:Percutaneous Coronary Intervention / Q000401:mortality*; D019990:Perioperative Care / Q000706:statistics & numerical data*; D010818:Practice Patterns, Physicians' / Q000706:statistics & numerical data*; D019984:Quality Indicators, Health Care / Q000592:standards*