Displaying 1 result from an estimated 1 matches for "g_stagesm".
2007 Mar 14
0
Wald test and frailty models in coxph
...d likelihood ratio
tests provided by the r output.
I am testing the survivorship of different sunflower interspecific
crosses using cytoplasm (Cyt), Pollen and the interaction Cyt*Pollen
as fixed effects, and sub-block as a random effect. I stratified
the analysis by developmental stage (G_stageSM) as an ordered factor
(two classes). There is a lot of tied deaths in this dataset.
Below is the analysis summary.
coxph(formula = Surv(Death_day, Censor) ~ Pollen * Cyt + strata
(G_stageSM) +
frailty(Sub.block), data = SurvNMexpSM)
n=1422 (1 observation deleted due to missingness)...