[R] cumulative incidence plot vs survival plot

array chip arrayprofile at yahoo.com
Tue Jun 28 20:45:11 CEST 2011


Thank you Alan again!  Hope you could also share your thought on my another 
email about the coding of  censoring before death..

Thanks again!

John



----- Original Message ----
From: alanm (Alan Mitchell) <alanm at crab.org>
To: array chip <arrayprofile at yahoo.com>; David Winsemius 
<dwinsemius at comcast.net>
Cc: r-help at r-project.org
Sent: Tue, June 28, 2011 11:40:52 AM
Subject: RE: [R] cumulative incidence plot vs survival plot

>So in cuminc() function, the argument "fstatus" should be coded like:
0=censored, 1=event of interest, 2=event of competing risk. Then the
function will calculate CI for each of the 2 types of events >(event of
interest and event of competing risk), am I correct?
Correct.

>What about running regular Cox regression for recurrence? any problem
there? for example, need to take into competing risk as well or regular
Cox regression is still fine?
This is a little trickier.  I would strongly suggest reading up on this
before doing any analyses.  There are a couple of different ways to do
this, but the crr function in cmprsk will perform a competing risks
regression.


Alan Mitchell, MSc
Ph: (206) 839-1708
alanm at crab.org



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