title: A statistics primer. Types of studies in the medical literature.
authors.affiliation: University of Michigan, Orthopedic Surgery, Ann Arbor, 48109, USA.
authors.forename: J E
authors.initials: JE
authors.lastname: Kuhn
authors.forename: M L
authors.initials: ML
authors.lastname: Greenfield
authors.forename: E M
authors.initials: EM
authors.lastname: Wojtys
mesh_terms: D016022:Case-Control Studies; D002986:Clinical Trials as Topic; D015331:Cohort Studies; D006801:Humans; D010506:Periodicals as Topic; D012107:Research Design