The finite sample performance of semi- and nonparametric estimators for treatment effects and policy evaluation

Markus Frölich (), Martin Huber and Manuel Wiesenfarth

No 454, FSES Working Papers from Faculty of Economics and Social Sciences, University of Freiburg/Fribourg Switzerland

Abstract: This paper investigates the finite sample performance of a comprehensive set of semi- and nonparametric estimators for treatment and policy evaluation. In contrast to previous simulation studies which mostly considered semiparametric approaches relying on parametric propensity score estimation, we also consider more flexible approaches based on semi- or nonparametric propensity scores, nonparametric regression, and direct covariate matching. In addition to (pair, radius, and kernel) matching, inverse probability weighting, regression, and doubly robust estimation, our studies also cover recently proposed estimators such as genetic matching, entropy balancing, and empirical likelihood estimation. We vary a range of features (sample size, selection into treatment, effect heterogeneity, and correct/misspecification) in our simulations and find that several nonparametric estimators by and large outperform commonly used treatment estimators using a parametric propensity score. Nonparametric regression, nonparametric doubly robust estimation, nonparametric IPW, and one-to-many covariate matching perform best.

Keywords: treatment effects; policy evaluation; simulation; empirical Monte Carlo study; propensity score; semi- and nonparametric estimation (search for similar items in EconPapers)
JEL-codes: C21 (search for similar items in EconPapers)
Pages: 55 pages
Date: 2015-02-24
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (14)

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Related works:
Journal Article: The finite sample performance of semi- and non-parametric estimators for treatment effects and policy evaluation (2017)
Working Paper: The Finite Sample Performance of Semi- and Nonparametric Estimators for Treatment Effects and Policy Evaluation (2015)
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