Dear all,
I understand why one might wish to use an offset when
estimating a Poisson regression (i.e., to model rates
as opposed to counts). However, can anyone tell me
why one would use an offset when fitting a logistic or
complementary log-log model? Particularly in the
context of longitudinal (panel) data? I have gone
through all of the Stata reference manuals I own
(which, unfortunately, do not include the User's
manual) and have also tried to find the answer online.
Any feedback would be appreciated.
Thanks.
--
Jim
=====
James W. Shaw, Ph.D., Pharm.D., M.P.H.
Post-Doctoral Fellow
Tobacco Control Research Branch
Behavioral Research Program
Division of Cancer Control and Population Sciences
National Cancer Institute
Tel.: 215-852-3045
Fax: 215-542-7150
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