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Integrating Diagnostic Checks into Estimation

Reca Sarfati, Vod Vilfort

arXiv 17 Apr 2026 · Econometrics

arXiv:2604.16690 · PDF · DOI · OpenAlex · Extracted main text

Abstract

Empirical researchers often use diagnostic checks to assess the plausibility of their modeling assumptions, such as testing for covariate balance in RCTs, pre-trends in event studies, or instrument validity in IV designs. While these checks are traditionally treated as external hurdles to estimation, we argue they should be integrated into the estimation process itself. In particular, we propose residualizing one's baseline estimator against the vector of diagnostic check statistics to remove the component of baseline sampling variation explained by the diagnostic checks. This residualized estimator offers researchers a "free lunch," delivering three properties simultaneously: (i) eliminating inference distortions from check-based selective reporting; (ii) reducing variance without changing the estimand when the baseline model is correctly specified; and (iii) minimizing worst-case bias under bounded local misspecification within the class of linear adjustments. We apply our method to the RCT in Kaur et al. (2024) and find that, even in a setting where all balance checks pass comfortably, residualization increases the magnitude of the baseline point estimate and reduces its standard error, equivalent to approximately a 10% increase in sample size.

Citation extraction

36
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Most heavily cited references

The works this paper leans on most, across its whole bibliography — not restricted to papers in our corpus. Ranked by composite intensity, which combines how often a work is mentioned, how many sections mention it, and how much of that falls in the main text rather than the appendix.

ReferenceIntensityMentionsSectionsMain text
1Kaur, Supreet and Mullainathan, Sendhil and Oh, Suanna and Schilbach… (2024) Do Financial Concerns Make Workers Less Productive?1.00064100%
2Andrews, Isaiah and Gentzkow, Matthew and Shapiro, Jesse M (2020) On the informativeness of descriptive statistics for structural estimates0.9416383%
3Van der Vaart, Aad W (2000) Asymptotic statistics0.9285380%
4Andrews, Isaiah and Kitagawa, Toru and McCloskey, Adam (2024) Inference on winners0.73732100%
5Banerjee, Abhijit V and Chassang, Sylvain and Montero, Sergio and Sn… (2020) A theory of experimenters: Robustness, randomization, and balance0.73732100%
6Sarfati, Reca and Vilfort, Vod (2025) "Post" Pre-Analysis Plans: Valid Inference for Non-Preregistered Specifications self0.73732100%
7Adusumilli, Karun (2026) You've Got to be Efficient: Ambiguity, Misspecification and Variational Preferences0.64422100%
8Andrews, Isaiah and Gentzkow, Matthew and Shapiro, Jesse M (2017) Measuring the Sensitivity of Parameter Estimates to Estimation Moments0.64422100%
9Andrews, Isaiah and Chen, Jiafeng and Tecchio, Otavio (2025) The purpose of an estimator is what it does: Misspecification, estimands, and over-identification0.64422100%
10Bickel, Peter J and Klaassen, Chris AJ and Bickel, Peter J and Ritov… (1993) Efficient and adaptive estimation for semiparametric models0.64422100%

Showing the top 10 of 36 scored citations.

Cited by, within the corpus

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1Robust Inference for Weighted Estimands0.40511