MEANING
An estimator comparing the before–after outcome change in a treated group with the corresponding change in a control group.
Use it for
Compare changes over time in a treated group and a control group.Use for quasi-experimental comparisons of outcome changes across treated and control groups over time.
On the page
The team used difference-in-differences to compare post-policy changes in treated and untreated districts.
Related words
Word forms
- Base
- difference-in-differences
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