extractBoot: Extract Fixed and Random Bootstrapped Parameters
In lqmm: Linear Quantile Mixed Models

Description Usage Arguments Details Value Author(s) See Also Examples

This generic function extracts the fixed and random components of bootstrapped estimates of an lqmm object.

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extractBoot(object, which = "fixed")
## S3 method for class 'boot.lqmm'
extractBoot(object, which = "fixed")

`object`	an object of `class` `boot.lqmm`.
`which`	character indicating whether `"fixed"` or `"random"` parameters.

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.

a matrix of bootstrapped estimates.

Marco Geraci

boot.lqmm, lqmm.fit.gs, lqmm.fit.df

## 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)