title: Biases in secondary analyses of randomised trials: recognition, correction, and implications.
authors.affiliation: Department of Obstetrics and Gynecology, College of Physicians and Surgeons, Columbia University, New York, NY, USA.|Biostatistics Coordinating Center, Department of Obstetrics and Gynecology, College of Physicians and Surgeons, Columbia University, New York, NY, USA.|Department of Epidemiology, Joseph L. Mailman School of Public Health, Columbia University, New York, NY, USA.
authors.forename: C V
authors.initials: CV
authors.lastname: Ananth
authors.affiliation: Department of Obstetrics and Gynecology, College of Physicians and Surgeons, Columbia University, New York, NY, USA.|Biostatistics Coordinating Center, Department of Obstetrics and Gynecology, College of Physicians and Surgeons, Columbia University, New York, NY, USA.
authors.forename: J A
authors.initials: JA
authors.lastname: Lavery
mesh_terms: D015982:Bias; D002821:Chorioamnionitis; D005260:Female; D006801:Humans; D007231:Infant, Newborn; D008278:Magnesium Sulfate; D011247:Pregnancy; D047928:Premature Birth
chemical_list: D008278:Magnesium Sulfate