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arXiv · 2409.20199

Synthetic Difference in Differences for Repeated Cross-Sectional Data

Yoann Morin
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Abstract

The synthetic difference-in-differences method provides an efficient method to estimate a causal effect with a latent factor model. However, it relies on the use of panel data. This paper presents an adaptation of the synthetic difference-in-differences method for repeated cross-sectional data. The treatment is considered to be at the group level so that it is possible to aggregate data by group to compute the two types of synthetic difference-in-differences weights on these aggregated data. Then, I develop and compute a third type of weight that accounts for the different number of observations in each cross-section. Simulation results show that the performance of the synthetic difference-in-differences estimator is improved when using the third type of weights on repeated cross-sectional data.

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Yoann Morin. 2024-09-30. Synthetic Difference in Differences for Repeated Cross-Sectional Data. https://arxiv.org/abs/2409.20199

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