RT Book, Section A1 Yadav, Kabir A1 Lewis, Roger J. A2 Livingston, Edward H. A2 Lewis, Roger J. SR Print(0) ID 1184195926 T1 Immortal Time Bias in Observational Studies 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=1184195926 RD 2024/04/24 AB This JAMA Guide to Statistics and Medicine explains immortal time bias, an error in estimating the association between an exposure and an outcome that results from misclassification or exclusion of time intervals; explains how this misclassification or exclusion can occur; and presents approaches to minimize or avoid immortal time bias.