MEestimate {nlme}R Documentation

Estimate mixed-effects parameters

Description

Estimate the parameters in a linear mixed-effects model.

Usage

MEestimate(object, groups, conLin=attr(object, "conLin"))

Arguments

object an object that inherits from class lmeStruct, describing a linear mixed-effects model or a nonlinear mixed-effects model.
groups a factor or list of factors giving the grouping of the observations
conLin a condensed linear model object. The default is attr(object, "conLin").

Details

This is a utility function used by lme and nlme. It is not intended for direct use.

Value

A list with components

logLik the log-likelihood at the estimate.
b the estimated BLUP's (Best Linear Unbiased Predictors) of the random effects
beta the estimates of the fixed effects
sigma the estimated standard deviation of the within-subject noise term.
varFix the estimated variance-covariance matrix of the fixed effects

Author(s)

Jose Pinheiro jose.pinheiro@pharma.novartis.com, Douglas Bates bates@stat.wisc.edu

See Also

MEEM, MEdecomp, lme, nlme


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