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Small sample properties of matching with caliper

Pawel Strawinski ()

No 2012-13, Working Papers from Faculty of Economic Sciences, University of Warsaw

Abstract: A caliper mechanism is a common tool used to prevent from inexact matches. The existing literature discusses asymptotic properties of matching with caliper. In this simulation study we investigate properties in small and medium sized samples. We show that caliper causes a significant bias of the ATT estimator and raises its variance in comparison to one-to-one matching.

Keywords: propensity score matching; caliper; Monte Carlo experiment; finite sample properties (search for similar items in EconPapers)
JEL-codes: C14 C21 C52 (search for similar items in EconPapers)
Pages: 14 pages
Date: 2012
New Economics Papers: this item is included in nep-ecm
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http://www.wne.uw.edu.pl/inf/wyd/WP/WNE_WP79.pdf First version, 2012 (application/pdf)

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Persistent link: https://EconPapers.repec.org/RePEc:war:wpaper:2012-13

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