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Re: st: Modelling two binary outcomes that are not mutually exclusive


From   SR Millis <srmillis@yahoo.com>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: Modelling two binary outcomes that are not mutually exclusive
Date   Sat, 27 Nov 2004 12:35:44 -0800 (PST)

> I have two binary outcomes, measured in a patient
> population (anxiety 
> and depression). For various reasons, I suspect that
> a number of patient 
> characteristics predict depression but not anxiety.

Perhaps it might also be helpful to examine the
psychometric characteristics of your dependent
variable measures?

What tests are/were used to measure depression and
anxiety? Have confirmatory factor analyses and/or
Rasch analyses been performed on your scales to assess
dimensionality and content?

Constructs like "depreession" and "anxiety" can be
complex---are they best measured as binary constructs?


SR Millis


=====
Scott R Millis, PhD, MEd, ABPP (CN & RP)
Director, Office of Clinical Trials
Kessler Medical Rehabilitation Research & Education Corp
1199 Pleasant Valley Way
West Orange, NJ  07052

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