A note on the role of the propensity score for estimating average treatment effects
Journal
Econometric Reviews
ISSN
0747-4938
ISSN-Digital
1532-4168
Type
journal article
Date Issued
2004-05-01
Author(s)
Froelich, Markus
Abstract
Hahn [Hahn, J. (1998). On the role of the propensity score in efficient semiparametric estimation of average treatment effects. Econometrica 66:315-331] derived the semiparametric efficiency bounds for estimating the average treatment effect (ATE) and the average treatment effect on the treated (ATET). The variance of ATET depends on whether the propensity score is known or unknown. Hahn attributes this to "dimension reduction." In this paper, an alternative explanation is given: Knowledge of the propensity score improves upon the estimation of the distribution of the confounding variables.
Language
English
Keywords
evaluation
HSG Classification
contribution to scientific community
Refereed
No
Publisher
Taylor & Francis
Publisher place
Philadelphia, Pa.
Volume
23
Number
2
Start page
167
End page
174
Pages
8
Subject(s)
Division(s)
Eprints ID
14728
File(s)![Thumbnail Image]()
Name
Note_pscore_Froelich.pdf
Size
172.74 KB
Format
Adobe PDF
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