title: Observational versus randomised trial evidence.
authors.forename: Daniel J
authors.initials: DJ
authors.lastname: Brotman
mesh_terms: D015986:Confounding Factors, Epidemiologic; D015438:Health Behavior; D006801:Humans; D015233:Models, Statistical; D019370:Observation; D016032:Randomized Controlled Trials as Topic; D012959:Socioeconomic Factors