This generic function extracts the fixed and random components of bootstrapped estimates of an lqmm object.
extractBoot(object, which = "fixed")
# S3 method for boot.lqmm
extractBoot(object, which = "fixed")an object of class boot.lqmm.
character indicating whether "fixed" or "random" parameters.
a matrix of bootstrapped estimates.
The "random" parameters refer to the "raw" parameters of the variance-covariance matrix of the random effects as returned by lqmm.fit.gs and lqmm.fit.df.
# NOT RUN {
## Orthodont data
data(Orthodont)
# Random intercept model
fit <- lqmm(distance ~ age, random = ~ 1, group = Subject,
tau = 0.5, data = Orthodont)
fit.boot <- boot(fit)
# extract fixed effects
B <- extractBoot(fit.boot, which = "fixed")
# covariance matrix estimated fixed parameters
cov(B)
# }