title: Bias in experimental study designs: randomised controlled trials with parallel groups.
authors.affiliation: Institute for Medical and Biomedical Education, St George's, University of London, London, UK p.sedgwick@sgul.ac.uk.
authors.forename: Philip
authors.initials: P
authors.lastname: Sedgwick
mesh_terms: D000328:Adult; D001315:Australia; D001724:Birth Weight; D005260:Female; D006801:Humans; D007231:Infant, Newborn; D009035:Mothers / Q000706:statistics & numerical data*; D015337:Multicenter Studies as Topic; D009765:Obesity / Q000150:complications / Q000453:epidemiology*; D063868:Patient Outcome Assessment; D011247:Pregnancy; D011248:Pregnancy Complications / Q000453:epidemiology* / Q000209:etiology / Q000517:prevention & control; D016032:Randomized Controlled Trials as Topic / Q000379:methods / Q000592:standards; D012107:Research Design / Q000592:standards; D040242:Risk Reduction Behavior; D015983:Selection Bias