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. On Thu, 25 Aug 2005, Devarajan, Karthik wrote: > > 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. > > [[alternative HTML version deleted]] > > ______________________________________________ > R-help@stat.math.ethz.ch mailing list > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html PLEASE do (no HTML mail, useful subject, please) -- Brian D. Ripley, [EMAIL PROTECTED] Professor of Applied Statistics, http://www.stats.ox.ac.uk/~ripley/ University of Oxford, Tel: +44 1865 272861 (self) 1 South Parks Road, +44 1865 272866 (PA) Oxford OX1 3TG, UK Fax: +44 1865 272595 ______________________________________________ R-help@stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
