JSM 2005 - Toronto

Abstract #304823

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Legend: = Applied Session, = Theme Session, = Presenter
Activity Number: 275
Type: Contributed
Date/Time: Tuesday, August 9, 2005 : 10:30 AM to 12:20 PM
Sponsor: Section on Statistics in Epidemiology
Abstract - #304823
Title: Raking as a Form of Propensity Scoring
Author(s): David R. Judkins*+
Companies: Westat
Address: , Rockville, MD, 20850,
Keywords: Counterfactual Projections ; Observational Studies ; Confounder Control
Abstract:

It is demonstrated in this paper that raking can be used to produce counterfactual projection (CFP) weights that perform just as well as CFP weights based on inverse propensity scores for certain treatment propensity structures. Additionally, it is demonstrated that raking is superior to weights based on cumulative ordinal logistic models for certain models for certain treatment propensity structures when treatment is an ordinal variable, as in a dose-response study. Methods are given for constructing confidence intervals on estimated treatment effects constructed from raked CFP weights.

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Revised March 2005