Arbeitspapier
What is the Value of Knowing the Propensity Score for Estimating Average Treatment Effects?
Propensity score matching is widely used in treatment evaluation to estimate average treatment effects. Nevertheless, the role of the propensity score is still controversial. Since the propensity score is usually unknown and has to be estimated, the efficiency loss arising from not knowing the true propensity score is examined. Hahn (1998) derived the asymptotic variance bounds for known and unknown propensity scores. Whereas the variance of the average treatment effect is unaffected by knowledge of the propensity score, the bound for the treatment effect on the treated changes if the propensity score is known. However, the reasons for this remain unclear. In this paper it is shown that knowledge of the propensity score does not lead to a ?dimension reduction?. Instead it enables a more efficient estimation of the distribution of the confounding variables.
- Sprache
-
Englisch
- Erschienen in
-
Series: IZA Discussion Papers ; No. 548
- Klassifikation
-
Wirtschaft
Semiparametric and Nonparametric Methods: General
Estimation: General
- Thema
-
evaluation
matching
causal effect
semiparametric efficiency bound
Statistische Verteilung
Nichtparametrisches Verfahren
- Ereignis
-
Geistige Schöpfung
- (wer)
-
Frölich, Markus
- Ereignis
-
Veröffentlichung
- (wer)
-
Institute for the Study of Labor (IZA)
- (wo)
-
Bonn
- (wann)
-
2002
- Handle
- Letzte Aktualisierung
-
20.09.2024, 08:22 MESZ
Datenpartner
Dieses Objekt wird bereitgestellt von:
ZBW - Deutsche Zentralbibliothek für Wirtschaftswissenschaften - Leibniz-Informationszentrum Wirtschaft. Bei Fragen zum Objekt wenden Sie sich bitte an den Datenpartner.
ZBW - Deutsche Zentralbibliothek für Wirtschaftswissenschaften - Leibniz-Informationszentrum Wirtschaft. Bei Fragen zum Objekt wenden Sie sich bitte an den Datenpartner.
Objekttyp
- Arbeitspapier
Beteiligte
- Frölich, Markus
- Institute for the Study of Labor (IZA)
Entstanden
- 2002
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