ranef function

Extract Random Effects

This function computes random effects for a linear quantile mixed model.

## S3 method for class 'nlmm'
ranef(object, ...)

Arguments

• object: an object of class nlmm.
• ...: not used.

Details

The prediction of the random effects is done via estimated best linear prediction (Geraci and Farcomeni, 2019). The generic function ranef is imported from the nlme package (Pinheiro et al, 2014).

Returns

a data frame of predicted random effects.

References

Geraci, M. and Farcomeni A. (2020). A family of linear mixed-effects models using the generalized Laplace distribution. Statistical Methods in Medical Research, 29(9), 2665-2682.

Pinheiro J, Bates D, DebRoy S, Sarkar D and R Core Team (2014). nlme: Linear and Nonlinear Mixed Effects Models. R package version 3.1-117, https://CRAN.R-project.org/package=nlme.

Author(s)

Marco Geraci

See Also

nlmm, fixef.nlmm

Examples

## Not run:

data(rats)
fit <- nlmm(y ~ trt*time, random = ~ time, group = id, data = rats,
control = nlmmControl(multistart = FALSE))

# Predicted random intercepts and slopes
ranef(fit)
## End(Not run)