Re: retrieve p-value from a cox.obj

 
 Several responders have given input on how to find and read the code for
summary.coxph and print.coxph, or using str() to examine the output of a
coxph object.

  An even better starting place would be the documentation (yes there is some).
 
help(coxph) gives a page that contains:

  "Value:  an object of class coxph.  See 'coxph.object' for details."
 
and help(coxph.object) gives a description of all the components.

        Terry Therneau

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