st: xtlogit, confidence intervals for linear prediction

["Jane Bruce" <Jane.Bruce@lshtm.ac.uk>]

After fitting a population averaged logistic model adjusted for
clustering

xi: xtlogit outcome var1 i.var2 var3 ,pa i(villid) 

I want a plot of observed points (one per cluster)  / predicted line
with confidence intervals.   I'm having problems obtaining the correct
confidence interval.
Using sdtp after fitting the model I get  large negative prevalence
values for the lower interval? 

would appreciate any advice.

thanks Jane 

Jane Bruce 
Statistician

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