RT Book, Section A1 Huo, Xiqian A1 Armitage, Jane A2 Livingston, Edward H. A2 Lewis, Roger J. SR Print(0) ID 1186809813 T1 Use of Run-in Periods in Randomized Trials T2 JAMA Guide to Statistics and Methods YR 2019 FD 2019 PB McGraw-Hill Education PP New York, NY SN 9781260455328 LK jamaevidence.mhmedical.com/content.aspx?aid=1186809813 RD 2023/06/02 AB This JAMA Guide to Statistics and Methods reviews the use of prerandomization run-in periods to improve treatment adherence and reduce loss to follow-up, and explains how they should be interpreted.