title: A statistics primer. Validity and reliability.
authors.affiliation: Section of Orthopaedic Surgery, University of Michigan, Ann Arbor 48109, USA.
authors.forename: M L
authors.initials: ML
authors.lastname: Greenfield
authors.forename: J E
authors.initials: JE
authors.lastname: Kuhn
authors.forename: E M
authors.initials: EM
authors.lastname: Wojtys
mesh_terms: D000886:Anthropometry; D006801:Humans; D009985:Orthopedics / Q000592:standards*; D017063:Outcome Assessment, Health Care; D015203:Reproducibility of Results; D012106:Research / Q000592:standards; D013223:Statistics as Topic