References

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Cinelli, Carlos, and Chad Hazlett. 2020. “Making Sense of Sensitivity: Extending Omitted Variable Bias.” Journal of the Royal Statistical Society: Series B 82 (1): 39–67.

Xu, Yiqing, Anqi Zhao, and Peng Ding. 2026. “Factorial Difference-in-Differences.” Journal of the American Statistical Association, nos. just-accepted: 1–23.