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Statistical Approaches to Modeling Multiple Outcomes In Psychiatric Studies

Overview
Journal Psychiatr Ann
Specialty Social Sciences
Date 2010 Feb 18
PMID 20161512
Citations 19
Authors
Armando Teixeira-Pinto
Juned Siddique
Robert Gibbons
Sharon-Lise Normand
Affiliations
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Abstract

Increasingly, multiple outcomes are collected in order to characterize treatment effectiveness or to evaluate risk factors. These outcomes tend to be correlated because they are measuring related quantities in the same individuals. While the analysis of outcomes measured in the same scale (commensurate outcomes) can be undertaken with standard statistical methods, outcomes measured in different scales (non-commensurate outcomes), such as mixed binary and continuous outcomes, present more difficult challenges.In this paper we contrast some statistical approaches to analyze non-commensurate multiple outcomes. We discuss the advantages of a multivariate method for the analysis of non-commensurate outcomes including situations of missing data. A real data example from a clinical trial, comparing different treatments for depression in low-income women, is used to illustrate the differences between the statistical approaches.

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