[R] Survival Analysis with two different events

From: sickboyedd <sickboyedd_at_gmail.com>
Date: Sun, 29 Jun 2008 10:53:10 -0700 (PDT)

Hello all,

I am hoping to use survival analysis to examine whether parasite attack increases nest death in a species of social wasp. I therefore have data for

  1. Whether the nest "died" in the 6 week census period ("Status", where 1=died, 0=survived)
  2. The day number of death/last recorded day it was observed alive.
  3. Whether the nest was attacked by the parasite (0/1 as with 1.)
  4. The day number of attack/ last recorded day the nest was observed without a parasite.

i.e. example dataset:

status death para paraday

0           42       0       42
1           32       0       42
1           25       1       13
0           42       1       25 ...

I've looked over r-help, as well as in Crawley etc., but I have yet to find a solution. Can anyone point me in the right direction or literature?

Many thanks,

Edd Almond

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