Freedman, Seth; Hollingsworth, Alex; Simon, Kosali … - National Bureau of Economic Research - 2023
Difference-in-Difference (DID) estimators are a valuable method for identifying causal effects in the public health … in adoption and varies with time. Despite this, no practical guide exists for addressing these new critiques in public … health research. We illustrate these new DID concepts with step-by-step examples, code, and a checklist. We draw insights by …