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st: case-cohort data structures


From   "Bondy, Susan" <susan.bondy@ices.on.ca>
To   "'statalist@hsphsun2.harvard.edu'" <statalist@hsphsun2.harvard.edu>
Subject   st: case-cohort data structures
Date   Fri, 5 Jul 2002 12:24:28 -0400

Hi, we've been using the stcascoh and stselpre commands to turn a cohort
study dataset into a dataset designed for case-cohort analysis. Wonderful
commands these. 
However, we don't want Stata to select the random sample from the cohort at
baseline, we've already done that.  Rather, we wish to feed the stcascoh
command the subcohort members and nonsubcohort cases, or an indicator
variable stating which cohort members should be in the subcohort.  
Is there an extension to the stcascoh command that this that would force the
macro to keep our selection, or have we missed finding a different command
to accomplish this?  
Many thanks for your assistance.
-Sue and Ruby


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