Dear all:
I am working on a dataset from a cohort study. I have time-varying
dichotomous exposure variable and the outcome being the onset of cancer. I
need to calculate the incidence rates and also the rate ratios adjusted for
time-varying and time-independent categorical covariates.
While extended Cox model allows for time-varying covariates, I am not sure
on how to deal with time-varying exposure. Any references or comments are
highly appreciated.
Regards,
Selvaraj
Research Fellow,
Centre for Rural Health (Univ of Aberdeen)
Beechwood Business Park North
Inverness IV2 3BL.
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