Hi Wei Xun,
However, I noticed that unlike stcox, stcrreg does not allow any
stratification terms within the model. Are there any particular
reasons why this not possible?
A further complication in the competing risks regression with respect to
the usual cause-specific survival model is that we must take into
account the censoring distribution that varies across different strata.
The censoring distribution provides weights used in the estimation of
the competing risks model.
Note also that a -strata- option (i.e. an option allowing different
baseline hazard of the subdistribution for each value of the stratavar)
is not available within the -cmprsk- package too written by Fine and
Gray themselves.
Therefore, I suspect that this topic is not completely explored until now.
Could I alternatively use stcompet to calculate the cumulative incidence
curve and estimate it from the point of 50%?
This should not be correct.
Note that 1-Cumulative Incidence is not a Survival probability and that
this function (1-CI) is not easily interpretable in practical research.
Best wishes
Enzo
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Enzo Coviello
Epidemiology Unit ASL Bari
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Italy
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