title: Efficacyversuseffectiveness in clinical trials.
authors.affiliation: University of Oxford, John Radcliffe Hospital, Oxford, OX3 7UD, UK.
authors.forename: M L
authors.initials: ML
authors.lastname: Costa
authors.affiliation: University of Oxford, John Radcliffe Hospital, Oxford, OX3 7UD, UK.
authors.forename: X L
authors.initials: XL
authors.lastname: Griffin
authors.affiliation: University of Warwick, Warwick Medical School, Coventry, CV4 7AL, UK.
authors.forename: N
authors.initials: N
authors.lastname: Parsons
authors.affiliation: University of Oxford, Oxford, OX3 7HE, UK.
authors.forename: M
authors.initials: M
authors.lastname: Dritsaki
authors.affiliation: University of Liverpool, Easton Rd, Liverpool, L12 2AP, UK.
authors.forename: D
authors.initials: D
authors.lastname: Perry
mesh_terms: D015986:Confounding Factors, Epidemiologic; D035081:Editorial Policies; D006801:Humans; D019637:Orthopedic Procedures; D017063:Outcome Assessment, Health Care / Q000379:methods* / Q000592:standards; D016032:Randomized Controlled Trials as Topic / Q000379:methods* / Q000592:standards; D012107:Research Design / Q000592:standards
keywords: Clinical Trials; Effectiveness; Efficacy; Orthopaedic; Surgery; Trauma