Gaby Serdun replied:
Thanks, yes collapse is an option but I want to
calculate means and CI for each month not for the
whole period if I use collapse then I can not use ci.
Or this is also possible?
------------------------------------------------------------------------
Then use -collapse (mean) male female ...- instead and see if that does you.
Anyway, if most of your data contains only 3 or 4 monthly observations on
average, I do wonder if calculating CIs for your monthly means is terribly
meaningful. If you think it is, plod on.
Clive Nicholas
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