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lmerTest (version 3.2-0)

Tests in Linear Mixed Effects Models

Description

Provides p-values in type I, II or III anova and summary tables for lmer model fits (cf. lme4) via Satterthwaite's degrees of freedom method. A Kenward-Roger method is also available via the pbkrtest package. Model selection methods include step, drop1 and anova-like tables for random effects (ranova). Methods for Least-Square means (LS-means) and tests of linear contrasts of fixed effects are also available.

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Version

Install

install.packages('lmerTest')

Monthly Downloads

73,481

Version

3.2-0

License

GPL (>= 2)

Issues

15

Pull Requests

1

Stars

53

Forks

9

Maintainer

Rune Haubo Bojesen Christensen

Last Published

January 13th, 2026

Functions in lmerTest (3.2-0)

lmerModLmerTest-class

Represent Linear Mixed-Effects Models
show_tests.ls_means

Show LS-means Hypothesis Tests and Contrasts
summary.lmerModLmerTest

Summary Method for Linear Mixed Models
step.lmerModLmerTest

Backward Elimination for Linear Mixed Models
step

Generic Step Function
plot.step_list

Plot LS-means for Backward Reduced Model
ranova

ANOVA-Like Table for Random-Effects
show_tests

Show Tests Generic Function and Default Method
show_tests.anova

Show Hypothesis Tests in ANOVA Tables
contest

Generic Contrast Test Functions
merModLmerTest-class

Legacy lmerTest representation of Linear Mixed-Effects Models
lmerTest-package

lmerTest: Tests in Linear Mixed Effects Models
ls_means.lmerModLmerTest

LS-means for lmerTest Model Fits
contest1D.lmerModLmerTest

Contrast Tests in 1D
as_lmerModLmerTest

Coerce lmerMod Objects to lmerModLmerTest
contestMD.lmerModLmerTest

Multiple Degrees-of-Freedom Contrast Tests
anova.lmerModLmerTest

ANOVA Tables for Linear Mixed Models
drop1.lmerModLmerTest

Drop Marginal Terms from Model
contest.lmerModLmerTest

Test of Contrasts
TVbo

Sensory Assesment of B&O TVs
as.data.frame.ls_means

Coerce ls_means Objects to data.frames
carrots

Consumer Preference Mapping of Carrots
get_model

Extract Model from an Object
anova.merModLmerTest

Methods for Legacy lmerTest Objects
lmer

Fit Linear Mixed-Effects Models
ham

Conjoint Study of Dry Cured Ham
plot.ls_means

Bar Plots of LS-Means
ls_means

LS-means Generic Function