nlme (version 3.1-1)

summary.lme: Summarize an lme Object

Description

Additional information about the linear mixed-effects fit represented by object is extracted and included as components of object. The returned object is suitable for printing with the print.summary.lme method.

Usage

summary(object, verbose)

Arguments

object

an object inheriting from class lme, representing a fitted linear mixed-effects model.

verbose

an optional logical value used to control the amount of output in the print.summary.lme method. Defaults to FALSE.

Value

• an object inheriting from class summary.lme with all components included in object (see lmeObject for a full description of the components) plus the following components:
• corFixed
  approximate correlation matrix for the fixed effects estimates
• tTable
  a data frame with columns Value, Std. Error, DF, t-value, and p-value representing respectively the fixed effects estimates, their approximate standard errors, the denominator degrees of freedom, the ratios between the estimates and their standard errors, and the associated p-value from a t distribution. Rows correspond to the different fixed effects.
• residuals
  if more than five observations are used in the lme fit, a vector with the minimum, first quartile, median, third quartile, and maximum of the innermost grouping level residuals distribution; else the innermost grouping level residuals.
• AIC
  the Akaike Information Criterion corresponding to object.
• BIC
  the Bayesian Information Criterion corresponding to object.

See Also

lme, AIC, BIC, print.summary.lme

Examples

library(nlme)
data(Orthodont)
fm1 <- lme(distance ~ age, Orthodont, random = ~ age | Subject)
summary(fm1)

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