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Re: st: re: logistic modeling with longitudinal data (NLSY)


From   [email protected] (Brendan Halpin)
To   [email protected]
Subject   Re: st: re: logistic modeling with longitudinal data (NLSY)
Date   Wed, 02 Mar 2011 16:40:24 +0000

On Wed, Mar 02 2011, Matthew Aronson wrote:

> graduated high school. I'm wondering whether it's better to use: a)
> "total observation time, regardless of whether R ever completed high
> school," or b) "total observation time up to the point at which either
> R completed high school or at which no further observations occurred
> for the R"

On the grounds that (b) would involve conditioning on the outcome (i.e.,
using an explanatory variable that depends on the outcome), I would
recommend (a). 

Brendan
-- 
Brendan Halpin,  Department of Sociology,  University of Limerick,  Ireland
Tel: w +353-61-213147 f +353-61-202569 h +353-61-338562; Room F1-009 x 3147
mailto:[email protected]  http://www.ul.ie/sociology/brendan.halpin.html
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