Hi Adriana,
I believe that stexpect cannot be useful for you.
stexpect creates a new file with expected survival function starting from
a reference rate.
A typical setting could be data from a cancer registry, where you want to
compare the observed survival of the cancer patients with the survival expected
if these patients would have the same rates of death of the general populations.
The ratio of the observed and expected survival is the so called relative
survival and so on.
I apologize if the help file could be quite confusing. If you are interested,
before I write a more complete documentation of this command you should
read the book of T. Therneau on survival analysis, chap. 10.
Enzo
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