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Bounding Treatment Effects by Pooling Limited Information across Observations

Sokbae Lee, Martin Weidner

arXiv 9 Nov 2021 · Econometrics · publishedJournal of Econometrics (2026)

arXiv:2111.05243 · PDF · DOI · OpenAlex · Extracted main text

Abstract

We provide novel bounds on average treatment effects (on the treated) that are valid under an unconfoundedness assumption. Our bounds are designed to be robust in challenging situations, for example, when the conditioning variables take on a large number of different values in the observed sample, or when the overlap condition is violated. This robustness is achieved by only using limited "pooling" of information across observations. Namely, the bounds are constructed as sample averages over functions of the observed outcomes such that the contribution of each outcome only depends on the treatment status of a limited number of observations. No information pooling across observations leads to so-called "Manski bounds", while unlimited information pooling leads to standard inverse propensity score weighting. We explore the intermediate range between these two extremes and provide corresponding inference methods. We show in Monte Carlo experiments and through two empirical application that our bounds are indeed robust and informative in practice.

Citation extraction

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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
1Crump, R. K., V. J. Hotz, G. W. Imbens, and O. A. Mitnik (2009) Dealing with limited overlap in estimation of average treatment effects0.87462100%
2Connors, Alfred F., J., T. Speroff, N. V. Dawson, C. Thomas, J. Harr… (1996) The Effectiveness of Right Heart Catheterization in the Initial Care of Critically ill Patients0.87452100%
3Armstrong, T. B. and M. Kolesár (2021) Finite-sample optimal estimation and inference on average treatment effects under unconfoundedness0.81142100%
4Li, F., K. L. Morgan, and A. M. Zaslavsky (2018) Balancing covariates via propensity score weighting0.81142100%
5Rothe, C (2017) Robust confidence intervals for average treatment effects under limited overlap0.81142100%
6Manski, C. F (1989) Anatomy of the selection problem0.81142100%
7Manski, C. F (1990) Nonparametric bounds on treatment effects0.81142100%
8Stoye, J (2020) A simple, short, but never-empty confidence interval for partially identified parameters0.64441100%
9Dehejia, R. H. and S. Wahba (1999, December) (1999) Causal Effects in Nonexperimental Studies: Reevaluating the Evaluation of Training Programs0.64422100%
10Ma, X., Y. Sasaki, and Y. Wang (2025) Testing limited overlap0.58531100%

Showing the top 10 of 101 scored citations.

Cited by, within the corpus

arXiv econ.EM papers that cite this one, ranked by how heavily they lean on it.

Citing paperIntensityMentionsSections
1Stable Probability Weighting Large-Sample and Finite-Sample Estimation and Inference Methods for Heterogeneous Causal Effects of Multivalued Treatments Under Limited Overlap0.73732
2Treatment Evaluation at the Intensive and Extensive Margins0.64422
3Estimating Treatment Effects Under Bounded Heterogeneity0.40511