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Identification in Nonparametric Models for Dynamic Treatment Effects

Sukjin Han

arXiv 23 May 2018 · Econometrics · publishedJournal of Econometrics (2020) · 28 citations (OpenAlex)

arXiv:1805.09397 · PDF · DOI · OpenAlex · Extracted main text

Abstract

This paper develops a nonparametric model that represents how sequences of outcomes and treatment choices influence one another in a dynamic manner. In this setting, we are interested in identifying the average outcome for individuals in each period, had a particular treatment sequence been assigned. The identification of this quantity allows us to identify the average treatment effects (ATE's) and the ATE's on transitions, as well as the optimal treatment regimes, namely, the regimes that maximize the (weighted) sum of the average potential outcomes, possibly less the cost of the treatments. The main contribution of this paper is to relax the sequential randomization assumption widely used in the biostatistics literature by introducing a flexible choice-theoretic framework for a sequence of endogenous treatments. We show that the parameters of interest are identified under each period's two-way exclusion restriction, i.e., with instruments excluded from the outcome-determining process and other exogenous variables excluded from the treatment-selection process. We also consider partial identification in the case where the latter variables are not available. Lastly, we extend our results to a setting where treatments do not appear in every period.

Citation extraction

37
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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
1Heckman, J. J. and S. Navarro (2007) Dynamic discrete choice and dynamic treatment effects1.00074100%
2Vytlacil, E. and N. Yildiz (2007) Dummy endogenous variables in weakly separable models1.00063100%
3Heckman, J. J., J. E. Humphries, and G. Veramendi (2016) Dynamic treatment effects1.00053100%
4Murphy, S. A., M. J. van der Laan, J. M. Robins, and C. P. P. R. Group (2001) Marginal mean models for dynamic regimes1.00053100%
5Balat, J. and S. Han (2018) Multiple treatments with strategic interaction0.84333100%
6Murphy, S. A (2003) Optimal dynamic treatment regimes0.81142100%
7Vikström, J., G. Ridder, and M. Weidner (2018) Bounds on treatment effects on transitions0.81142100%
8Abbring, J. H. and J. J. Heckman (2007) Econometric evaluation of social programs, part III: Distributional treatment effects, dynamic treatment effects, dynamic discre…0.64422100%
9Abraham, S. and L. Sun (2018) Estimating Dynamic Treatment Effects in Event Studies with Heterogeneous Treatment Effects0.64422100%
10Callaway, B. and P. H. Sant'Anna (2018) Difference-in-Differences with Multiple Time Periods and an Application on the Minimum Wage and Employment0.64422100%

Showing the top 10 of 37 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
1Dynamic Local Average Treatment Effects0.87462
2Set-Valued Control Functions0.84333
3Design-based Analysis in Difference-In-Differences Settings with Staggered Adoption0.64422
4Identification in Endogenous Sequential Treatment Regimes0.64422
5Difference-in-Differences with Multiple Time Periods0.40511
6Multiple Treatments with Strategic Interaction0.40511
7The role of parallel trends in event study settings: An application to environmental economics0.40511
8A Computational Approach to Identification of Treatment Effects for Policy Evaluation0.40511
9Estimation of Optimal Dynamic Treatment Assignment Rules under Policy Constraints0.40511
10Synthetic Blips: Generalizing Synthetic Controls for Dynamic Treatment Effects0.40511