Re: [R] smooth non cumulative baseline hazard in Cox model

From: Peter Dalgaard <p.dalgaard_at_biostat.ku.dk>
Date: Mon 05 Jul 2004 - 07:31:49 EST

Prof Brian Ripley <ripley@stats.ox.ac.uk> writes:

> > I'm doing the same job as Hegre et al. (studying civil wars) but with the
> > counting process formulation of the Cox model. (I use intervals, my formula
> > looks like Surv(start,stop,status)~ etc.).
>
> Careful, that is left- and right- censored, not intervals. Surv has a
> type= argument.

Nitpick: That's left-*truncated* and right-censored (the status refers to the condition at the right end, people who die before the start are not registered at all).

-- 
   O__  ---- Peter Dalgaard             Blegdamsvej 3  
  c/ /'_ --- Dept. of Biostatistics     2200 Cph. N   
 (*) \(*) -- University of Copenhagen   Denmark      Ph: (+45) 35327918
~~~~~~~~~~ - (p.dalgaard@biostat.ku.dk)             FAX: (+45) 35327907

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Received on Mon Jul 05 07:39:21 2004

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