Difference-in-difference

Synonyms:

Difference in difference, Double difference

Difference-in-difference involves comparing the before-and-after difference for the group receiving the intervention (where they have not been randomly assigned) to the before-after difference for those who did not.

Resources

How Do We Know if a Program Made a Difference? A Guide to Statistical Methods for Program Impact Evaluation
This guide, written by Peter M. Lance, David K. Guilkey, Aiko Hattori and Gustavo Angeles for MEASURE Evaluation, outlines core statistical and econometric methods for program impact evaluation.
Impact Evaluation in Practice
This book from the World Bank provides a detailed introduction to impact evaluations in the development field. It also provides a number of tools and approaches for conducting impact evaluations.

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'Difference-in-difference' is referenced in:

Framework/Guide
- Rainbow Framework :
  Compare results to the counterfactual

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Difference-in-difference

Resources

'Difference-in-difference' is referenced in:

Framework/Guide