title: Sample size calculations in randomized trials: common pitfalls.
authors.forename: Penelope M A
authors.initials: PM
authors.lastname: Brasher
authors.forename: Rollin F
authors.initials: RF
authors.lastname: Brant
mesh_terms: D016001:Confidence Intervals; D003627:Data Interpretation, Statistical; D016032:Randomized Controlled Trials as Topic; D012107:Research Design / Q000592:standards; D018401:Sample Size; D015983:Selection Bias