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when to use difference in difference ?

Here are some links that might be useful to you:

https://towardsdatascience.com/a-guide-to-using-the-difference-in-differences-regression-model-87cd2fb3224a

https://towardsdatascience.com/a-guide-to-using-the-difference-in-differences-regression-model-87cd2fb3224a
A Guide To Using The Difference-In-Differences Regression Model
20 juin 2022The estimated difference-in-differences of 1.97% suggests that the house price inflation in the states that were especially affected by the 2005 hurricane season cooled down less than in the rest of the coastal states after the season ended. One way to explain this effect is by noting that inflation is often inversely proportional to supply.

https://scholar.harvard.edu/files/kasy/files/5-difference-in-differences.pdf

https://scholar.harvard.edu/files/kasy/files/5-difference-in-differences.pdf
PDF 5 Difference in Differences – Home | Scholars at Harvard
Difference-in-Differences Estimators 4.Panel Data/Regression With panel data we can use regression with the dependent variable in first differences: Yi = d +aDi +X0 i b +ui; where Yi = Yi(1) Yi(0), b = b 1 b 0, and ui = e i.)Here X also explains differences in trends. 14/23

https://link.springer.com / article / 10.1007 / s40471-023-00327-x

https://link.springer.com / article / 10.1007 / s40471-023-00327-x
A Tutorial on Applying the Difference-in-Differences Method to Health …
7 sept. 2023Purpose of Review Difference-in-differences analyses are a useful tool for estimating group-level decisions, such as policy changes, training programs, or other non-randomized interventions, on outcomes which occur within the intervention group. However, there is little practical advice on how to apply epidemiologic and health data. Here, we provide a tutorial on …

https://www.publichealth.columbia.edu/research/population-health-methods/difference-difference-estimation

https://www.publichealth.columbia.edu/research/population-health-methods/difference-difference-estimation
Difference-in-Difference Estimation | Columbia Public Health
Hence, Difference-in-difference is a useful technique to use when randomization on the individual level is not possible. DID requires data from pre-/post-intervention, such as cohort or panel data (individual level data over time) or repeated cross-sectional data (individual or group level). … Cannot if comparison groups have different …

https://www.emerald.com/insight/content/doi/10.1108/RAUSP-05-2019-0112/full/html

https://www.emerald.com/insight/content/doi/10.1108/RAUSP-05-2019-0112/full/html
Impact evaluation using Difference-in-Differences – Emerald Insight
4. Further details and considerations for the use of Difference-in-Differences 4.1 Using control variables for a more robust identification. With a non-random assignment to treatment, there is always the concern that the treatment states would have followed a different trend than the control states, even absent the reform.

https://en.wikipedia.org/wiki/Difference_in_differences

https://en.wikipedia.org/wiki/Difference_in_differences
Difference in differences – Wikipedia
Difference in differences. Difference in differences ( DID [1] or DD [2]) is a statistical technique used in econometrics and quantitative research in the social sciences that attempts to mimic an experimental research design using observational study data, by studying the differential effect of a treatment on a ‘treatment group’ versus a …

https://evaluationobservatory.org/knowledge-banks/difference-in-difference

https://evaluationobservatory.org/knowledge-banks/difference-in-difference
Difference-in-Difference | Knowledge Bank – Evaluation Observatory
Diff-in-diff approach compares trends between the treatment and comparison group instead of comparing outcomes. 1 This can be understood with the help of the following diagram. Source: (Eric, 2019) 2. An essential assumption of this approach is that differences between the treatment and comparison groups are constant over time, and hence it is …

https://bookdown.org/mike/data_analysis/difference-in-differences.html

https://bookdown.org/mike/data_analysis/difference-in-differences.html
Chapter 26 Difference-in-differences | A Guide on Data Analysis – Bookdown
26 Difference-in-differences. 26. Difference-in-differences. List of packages. Examples in marketing. ( Liaukonyte, Teixeira, and Wilbur 2015): TV ad on online shopping. ( Wang, Lewis, and Schweidel 2018): political ad source and message tone on vote shares and turnout using discontinuities in the level of political ads at the borders. ( Datta …

https://www.nber.org/sites/default/files/2021-03/slides_10_diffindiffs.pdf

https://www.nber.org/sites/default/files/2021-03/slides_10_diffindiffs.pdf
PDF What’s New in Econometrics? Lecture 10 Difference-in-Differences Estimation
The dummy dB captures possible differences between the treatment and control groups prior to the policy change. The dummy d2 captures aggregate factors that would cause changes in y even in the absense of a policy change. The coefficient of interest is 1. ∙ The difference-in-differences estimate is 1 ̂ . ȳ B,2 − ȳ B,1 − ȳ A,2 − ȳ A,1 .

https://link.springer.com/referenceworkentry/10.1007/978-3-030-31365-4_5

https://link.springer.com/referenceworkentry/10.1007/978-3-030-31365-4_5
A Primer for Interpreting and Designing Difference-in-Differences …
Difference-in-differences has become one of the most widely used methods for causal inference in higher education research. We use this chapter to introduce new researchers to this method with an overview of difference-in-differences models, common threats to their validity, and robustness checks.
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