title: Spin.
authors.affiliation: Dr. Riggs is the Associate Editor, Statistics, for Obstetrics & Gynecology; email: triggs@greenjournal.org.
authors.forename: Thomas W
authors.initials: TW
authors.lastname: Riggs
mesh_terms: D015982:Bias; D006176:Gynecology; D009774:Obstetrics; D016032:Randomized Controlled Trials as Topic