JSM 2005 - Toronto

Abstract #302507

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Legend: = Applied Session, = Theme Session, = Presenter
Activity Number: 80
Type: Invited
Date/Time: Monday, August 8, 2005 : 8:30 AM to 10:20 AM
Sponsor: Section on Health Policy Statistics
Abstract - #302507
Title: When a Placebo Group Is Unethical: A Propensity Score Approach
Author(s): Sue M. Marcus*+
Companies: Mount Sinai School of Medicine
Address: One Gustave L. Levy Place, New York, NY, 10029, USA
Keywords: propensity scores ; placebo ; causal inference ; noncompliance ; randomized controlled trials ; control group
Abstract:

In many randomized controlled trials, it may be unethical to withhold treatment. Consequently, a placebo group is infeasible. In this paper, we present a propensity score approach for using nontreatment-seeking individuals along with noshows as a pseudocontrol group. To illustrate these methods, we use a longitudinal study designed to compare the efficacy of two psychotherapy treatments to reduce problem drinking.

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Revised March 2005