Jesper Lindhardsen <JESLIN01@geh.regionh.dk> has a follow-up question of
whether it is safe to create new variables which contain copies of the current
system survival variables (_t, _t0, etc.) and use the newly created variables
in -stset-:
> ... I gather a simple clonevar or rename of system variables can solve the
> problem. Or am I mistaken ??
You can use any variables in -stset- so long as they do not have the same
names as survival system variables (_t, _t0, etc.). In Jesper's earlier
example, creating copies of the variables and using them with -stset- will
result in agreement between -strate- and -stptime-.
-- Yulia
ymarchenko@stata.com
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