Dear Statalist members, I apologize for this reposting. For some reason I
have been unsubscribed for several days. Here's my question:
I'm using stcox to estimate survival with one binary covariate (tcm), with
the model:
stcox tcm
Perhaps I'm mistaken, but I was expecting the bootstrap option to produce
a higher standard error and wider ci95.
BOOTSTRAP MODEL HR CI95 SE p
NO tcm 0.77 0.36, 1.67 0.30 0.51
YES tcm 0.77 0.39, 1.55 0.27 0.47
Can anybody suggest why that might be the case?
Best wishes,
Michael
____________________________________
Michael McCulloch
Pine Street Clinic
Pine Street Foundation
124 Pine Street, San Anselmo, CA 94960-2674
tel 415.407.1357
fax 415.485.1065
email: [email protected]
web: www.pinest.org
www.pinestreetfoundation.org
www.medepi.net/meta
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