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Re: st: predict after svy logit
At 10:42 AM 6/15/2005 -0400, Schonlau, Matthias wrote:
Dear stata listers:
I replicate both on this and on another data set. It looks like it is
giving xb instead of pr, i.e.
In version 9, When I use predict after " svy: logit" the predicted
probabilities range from roughly 0.8 to greater than 2.0. I don't
understand this. When predicting in Version 8.0 (under version control) I
get predictions that are credible. The survey logistic regression give the
same coefficients for both version 8.0 and version 9.0 , the problem is
only the prediction.
Below an example with partial output. Any suggestions ?
predict temp2, pr
predict temp3, xb
both yield the same results. Looks like a bug to me.
At least for now, you can work around it by doing the calculation yourself, e.g
gen temp4 = exp(temp2)/(1+exp(temp2))
Richard Williams, Notre Dame Dept of Sociology
OFFICE: (574)631-6668, (574)631-6463
WWW (personal): http://www.nd.edu/~rwilliam
WWW (department): http://www.nd.edu/~soc
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