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Re: st: Observations differ


From   Steve Samuels <sjsamuels@gmail.com>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: Observations differ
Date   Sun, 23 Sep 2012 08:13:59 -0400

Before running the reduced model, you must exclude observations that are
missing any covariates in the full model. This will make the number of
observations in the two models the same, 3356 in your case.

Steve


On Sep 23, 2012, at 8:02 AM, Shittu, Aminu wrote:

Hi all

I am trying to compare, using likelihood ratio test, between the full and reduced model in a random effect logistic regression; but the output is saying "observations differ: 3356 vs. 3583." How can I handle this problem, please.

Aminu.
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