Characteristics of obstetrical randomized controlled trials with large versus modest or no treatment effects

Affiliations

• ¹ Beth Israel Deaconess Medical Center/Harvard Medical School, Boston, MA, United States.
• ² Brown Medical School, Providence, RI, United States.
• ³ University of Massachusetts, Worchester, MA, United States.
• ⁴ Beth Israel Deaconess Medical Center/Harvard Medical School, Boston, MA, United States. Electronic address: swagner1@bidmc.harvard.edu.
• ⁵ Thomas Jefferson University, Philadelphia, PA, United States.
• ⁶ Christiana Care, Williamsport, DE, United States.
• ⁷ Tufts Medical Center, Boston, MA, United States.