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Re: st: using expressions in margins command


From   Robert Duval <rduval@gmail.com>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: using expressions in margins command
Date   Thu, 20 Jun 2013 12:46:24 +0300

Hi Jordan,

Did you try other non integer powers?

What values does your predict(xb) take?

Are they all strictly positive? Is any of them close to zero?

I ask this question wondering whether there is a numeric precision
problem given that you are dividing by your prediction, and you would
get missing values if you divide by zero or something close to it.

Robert
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