title: On the need for the rare disease assumption in some case-control studies.
authors.forename: P
authors.initials: P
authors.lastname: Cummings
authors.forename: T D
authors.initials: TD
authors.lastname: Koepsell
mesh_terms: D001642:Bicycling / Q000293:injuries*; D016022:Case-Control Studies; D006259:Craniocerebral Trauma / Q000453:epidemiology* / Q000517:prevention & control; D006260:Head Protective Devices / Q000706:statistics & numerical data*; D006801:Humans; D016017:Odds Ratio; D012107:Research Design