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Re: st: Growth Curve & Binary Variables - Issues


From   Nick Cox <njcoxstata@gmail.com>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: Growth Curve & Binary Variables - Issues
Date   Mon, 25 Jun 2012 14:17:26 +0100

You are apparently expecting that predictions from a
multiple-predictor model plot as smooth curves on a two-dimensional
plot. That would be very unusual unless you plug in constant values
for every predictor except that shown. -marginsplot- may be able to
help you.

On Mon, Jun 25, 2012 at 2:03 PM, Brendan Churchill
<Brendan.Churchill@utas.edu.au> wrote:

> I'm trying to graph the output from a multilevel/growth curve model but I am having some difficulty. When I plot the model based on the predicted values, the graph appears distorted - I think this because of the inclusion of binary/dummy variables, for example sex ,which gives me a growth curve/trajectory for males and females. How do I plot the graph so that it does not include separate curves/trajectories for men and women, but one just overall - or one that incorporates/maintains sex in the model, but does not distinguish?

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