Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 456224
Title Which covariates should be controlled in propensity score matching? Evidence from a simulation study
Author(s) Nguyen Viet Cuong, N.
Source Statistica Neerlandica 67 (2013)2. - ISSN 0039-0402 - p. 169 - 180.
Department(s) Development Economics Group
Publication type Refereed Article in a scientific journal
Publication year 2013
Keyword(s) estimators - program
Abstract Propensity score matching is a widely-used method to measure the effect of a treatment in social as well as medicine sciences. An important issue in propensity score matching is how to select conditioning variables in estimation of the propensity scores. It is commonly mentioned that variables which affect both program participation and outcomes are selected. Using Monte Carlo simulation, this paper shows that efficiency in estimation of the Average Treatment Effect on the Treated can be gained if all the available observed variables in the outcome equation are included in the estimation of propensity scores. This result still holds in the presence of non-sampling errors in the observed control variables
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