[R] I wonder if cch function in Survival package can calculate time dependent covariate

From: Jin Wang <jinwang25_at_gmail.com>
Date: Wed, 11 Jun 2008 17:36:53 -0400


Hi

In case cohort study, we can fit proportional hazard regression model to case-cohort data. In R, the function is cch() in Survival package Now I am working on case cohort analysis with time dependent covariates using cch() of "Survival" R package. I wonder if cch() provide this utility or not?
The cch() manual does not say if time dependent covariate is allowed I know coxph() in Survival package can estimate time dependent covariates.

Thanks

Jin Wang

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