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Identifying Marginal Treatment Effects in the Presence of Sample Selection

Otavio Bartalotti, D\'esir\'e K\'edagni and Vitor Possebom
Authors registered in the RePEc Author Service: Desire Kedagni

Papers from arXiv.org

Abstract: This article presents identification results for the marginal treatment effect (MTE) when there is sample selection. We show that the MTE is partially identified for individuals who are always observed regardless of treatment, and derive uniformly sharp bounds on this parameter under three increasingly restrictive sets of assumptions. The first result imposes standard MTE assumptions with an unrestricted sample selection mechanism. The second set of conditions imposes monotonicity of the sample selection variable with respect to treatment, considerably shrinking the identified set. Finally, we incorporate a stochastic dominance assumption which tightens the lower bound for the MTE. Our analysis extends to discrete instruments. The results rely on a mixture reformulation of the problem where the mixture weights are identified, extending Lee's (2009) trimming procedure to the MTE context. We propose estimators for the bounds derived and use data made available by Deb, Munking and Trivedi (2006) to empirically illustrate the usefulness of our approach.

Date: 2021-12
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (3)

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http://arxiv.org/pdf/2112.07014 Latest version (application/pdf)

Related works:
Journal Article: Identifying marginal treatment effects in the presence of sample selection (2023) Downloads
Working Paper: Identifying Marginal Treatment Effects in the Presence of Sample Selection (2021) Downloads
Working Paper: Identifying Marginal Treatment Effects in the Presence of Sample Selection (2019) Downloads
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