title: Underpowered studies.
authors.affiliation: Department of Public Health and Epidemiology, University of Birmingham, Edgbaston, Birmingham B15 2TT, UK.
authors.forename: R
authors.initials: R
authors.lastname: Lilford
authors.forename: A J
authors.initials: AJ
authors.lastname: Stevens
mesh_terms: D002986:Clinical Trials as Topic / Q000592:standards*; D006801:Humans; D017594:Publication Bias; D015203:Reproducibility of Results; D018401:Sample Size