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st: Possible to use stsum with variables that are tvc?
I used the -tvc- option in an -stcox- command. Is it possible to use
-stsum- to obtain incidence rates for a variable if it is a time varying
Suppose I want the rate of x and I have xdate which is the date when x
begins and represents some portion of a subjects survival time. If I use:
. stcox tvc(xdate)
can I obtain the incidence rate from:
. stsum x
Or do I need to -stsplit- my data first?
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