This question was answered promptly:
http://www.hsph.harvard.edu/cgi-bin/lwgate/STATALIST/archives/statalist.0511/date/article-336.html
>>> Wolfgang Langer wrote
Sorry, I try it a second time because I haven't got an answer.
I have written a small program to calculate the
goodness-of-fit-chi2-test after estimating a WLS-regression modell for
tabulated data (GSK-approach). How can I extract the varname from the
e(wexp) container to use it in my program? Typing "dis e(wexp)" I get
only the expression "=varname of weighting variable" but not the
varname itself. I need this to formulate my program gofchi2 mor generally.
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