Extracts the log-likelihood function for a fitted parametric model.
Usage
# S3 method for survstan
logLik(object, ...)Arguments
- object
a fitted model of the class survstan
- ...
further arguments passed to or from other methods.
Value
the log-likelihood value when a single model is passed to the function; otherwise, a data.frame with the log-likelihood values and the number of parameters is returned.
Examples
# \donttest{
library(survstan)
fit1 <- aftreg(Surv(futime, fustat) ~ 1, data = ovarian, baseline = "weibull", init = 0)
fit2 <- aftreg(Surv(futime, fustat) ~ rx, data = ovarian, baseline = "weibull", init = 0)
fit3 <- aftreg(Surv(futime, fustat) ~ ecog.ps + rx, data = ovarian, baseline = "weibull", init = 0)
logLik(fit1, fit2, fit3)
#> fit loglik npars
#> 1 fit1 -12.60597 2
#> 2 fit3 -97.08449 4
#> 3 fit2 -97.36415 3
# }