title: Selection of cases and controls: Additional information is needed.
abstract: The potential for selection bias is a concern in any case-control study. Cases and controls should be representative of the respective diseased and nondiseased persons in a well delineated target population. Even with representative cases and controls, if there is a high (or differential) nonparticipation rate among (or between) cases and controls, selection bias may be introduced. Case-control studies offer an efficient observational analytic design, but they also carry a high potential for the introduction of bias.
authors.forename: Alan R
authors.initials: AR
authors.lastname: Katz
mesh_terms: D000328:Adult; D016022:Case-Control Studies; D003325:Coronary Care Units / Q000379:methods*; D006115:Greece / Q000453:epidemiology; D017052:Hospital Mortality; D006760:Hospitalization / Q000706:statistics & numerical data*; D006801:Humans; D009203:Myocardial Infarction / Q000175:diagnosis / Q000401:mortality / Q000628:therapy; D018579:Patient Selection; D018570:Risk Assessment; D015996:Survival Rate