[S] Variation on Cox proportional hazards

John Maindonald (john.maindonald@anu.edu.au)
Wed, 23 Sep 1998 16:35:04 +1000 (EST)

I have data where, rather than proportional hazards, it seems more
plausible that the relative hazards change linearly with time. Is it
possible to fit such models using S-PLUS4.5 survival analysis, or
available library routines? While cox.zph() is able to do something
of this type for testing purposes, I cannot see how one can do the
corresponding estimation problem.

John Maindonald email : john.maindonald@anu.edu.au
Statistical Consulting Unit, phone : (6249)3998
c/o CMA, SMS, fax : (6249)5549
John Dedman Mathematical Sciences Building
Australian National University
Canberra ACT 0200
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