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st: -groups- and -todate- updated on SSC


From   "Nick Cox" <n.j.cox@durham.ac.uk>
To   <statalist@hsphsun2.harvard.edu>
Subject   st: -groups- and -todate- updated on SSC
Date   Thu, 31 Jul 2003 16:15:42 +0100

Thanks to Kit Baum, -groups- (requires Stata 8) 
and -todate- (requires Stata 7) have been updated
on SSC. 

-groups- would choke if you had an _merge variable 
defined in the dataset, as a result of a previous -merge-,  
or otherwise. It now no longer requires that _merge not 
exist. Thanks to Fred Wolfe for bringing this to my 
attention. 

-todate- did not respect -if- or -in- conditions properly.
Thanks to Roger Harbord for bringing this to my attention. 

Nick 
n.j.cox@durham.ac.uk 

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