question about coxph (was covariance matrix under null)

You will need to tell us of _what_ you want the covariance matrix and what 
you mean by the `null hypothesis':  coxph does estimation, not testing.

If you want the covariance matrix of the parameter estimates, see vcov(), 
which has a coxph method.

Hello

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.

Thanks,
KD.

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Brian D. Ripley,                  ripley at stats.ox.ac.uk
Professor of Applied Statistics,  http://www.stats.ox.ac.uk/~ripley/
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