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nlme (version 3.1-114)

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

## S3 method for class 'lme':
summary(object, adjustSigma, verbose, \dots)

Arguments

object
an object inheriting from class "lme", representing a fitted linear mixed-effects model.
adjustSigma
an optional logical value. If TRUE and the estimation method used to obtain object was maximum likelihood, the residual standard error is multiplied by $\sqrt{n_{obs}/(n_{obs} - n_{par})}$, converting it to a REML-lik
verbose
an optional logical value used to control the amount of output in the print.summary.lme method. Defaults to FALSE.
...
some methods for this generic require additional arguments. None are used in this method.

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:
  • corFixedapproximate correlation matrix for the fixed effects estimates
  • tTablea 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.
  • residualsif 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.
  • AICthe Akaike Information Criterion corresponding to object.
  • BICthe Bayesian Information Criterion corresponding to object.

See Also

AIC, BIC, lme, print.summary.lme

Examples

Run this code
fm1 <- lme(distance ~ age, Orthodont, random = ~ age | Subject)
summary(fm1)

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