[R] covariance matrix under null

From: Devarajan, Karthik <Karthik.Devarajan_at_fccc.edu>
Date: Fri 26 Aug 2005 - 08:37:28 EST


I am fitting a Cox PH model using the function coxph(). Does anyone know how to obtain the estimate of the covariance matrix under the null hypothesis. The function coxph.detail() does not seem to be useful for this purpose.


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