TY - CHAP M1 - Book, Section TI - Methods for Evaluating Changes in Health Care Policy—The Difference-in-Differences Approach A1 - Dimick, Justin B. A1 - Ryan, Andrew M. A2 - Livingston, Edward H. A2 - Lewis, Roger J. PY - 2019 T2 - JAMA Guide to Statistics and Methods AB - This JAMA Guide to Statistics and Methods describes when to use a difference-in-differences analysis to evaluate changes in health care before and after changes in health care policy. SN - PB - McGraw-Hill Education CY - New York, NY Y2 - 2024/10/06 UR - jamaevidence.mhmedical.com/content.aspx?aid=1209175623 ER -