I am trying to analyze survival times of bird nestlings using radio telemetry data.
I tagged birds on different dates and I need to use the kaplan-meier method with staggered entry
(Pollock et al. 1989; http://www.auburn.edu/~grandjb/wildpop/ ... ._1989.pdf
I am having trouble with the staggered entry part...Does anyone know how to do this in SPSS?