# Regression Models for Ordinal Data

## Documentation for package ‘ordinal’ version 2026.7-26

- DESCRIPTION file.
- User guides, package vignettes and other documentation.
- Package NEWS.

## Help Pages

ordinal-package | Regression Models for Ordinal Data via Cumulative Link (Mixed) Models
anova.clm | ANODE Tables and Likelihood ratio test of cumulative link models
clm | Cumulative Link Models
clm.control | Set control parameters for cumulative link models
clm.fit | Fit Cumulative Link Models
clm.fit.default | Fit Cumulative Link Models
clm.fit.factor | Fit Cumulative Link Models
clm2 | Cumulative link models
clm2.control | Set control parameters for cumulative link models
clmm | Cumulative Link Mixed Models
clmm.control | Set control parameters for cumulative link mixed models
clmm2 | Cumulative link mixed models
clmm2.control | Set control parameters for cumulative link mixed models
condVar | Extract conditional modes and conditional variances from clmm objects
condVar.clmm | Extract conditional modes and conditional variances from clmm objects
confint.clm | Confidence intervals and profile likelihoods for parameters in cumulative link models
confint.clmm2 | Confidence intervals and profile likelihoods for the standard deviation for the random term in cumulative link mixed models
confint.profile.clm | Confidence intervals and profile likelihoods for parameters in cumulative link models
confint.profile.clmm2 | Confidence intervals and profile likelihoods for the standard deviation for the random term in cumulative link mixed models
convergence | Check convergence of cumulative link models
convergence.clm | Check convergence of cumulative link models
dgumbel | The Gumbel Distribution
dlgamma | The log-gamma distribution
drop.coef | Ensure Full Rank Design Matrix
gcauchy | Gradients of common densities
ggumbel | The Gumbel Distribution
glgamma | The log-gamma distribution
glogis | Gradients of common densities
gnorm | Gradients of common densities
income | Income distribution (percentages) in the Northeast US
nominal_test | Likelihood ratio tests of model terms in scale and nominal formulae
nominal_test.clm | Likelihood ratio tests of model terms in scale and nominal formulae
ordinal | Regression Models for Ordinal Data via Cumulative Link (Mixed) Models
pgumbel | The Gumbel Distribution
plgamma | The log-gamma distribution
plot.profile.clm | Confidence intervals and profile likelihoods for parameters in cumulative link models
plot.profile.clmm2 | Confidence intervals and profile likelihoods for the standard deviation for the random term in cumulative link mixed models
plot.slice.clm | Slice the likelihood of a clm
predict.clm | Predict Method for CLM fits
print.convergence.clm | Check convergence of cumulative link models
profile.clm | Confidence intervals and profile likelihoods for parameters in cumulative link models
profile.clmm2 | Confidence intervals and profile likelihoods for the standard deviation for the random term in cumulative link mixed models
qgumbel | The Gumbel Distribution
ranef | Extract conditional modes and conditional variances from clmm objects
ranef.clmm | Extract conditional modes and conditional variances from clmm objects
rgumbel | The Gumbel Distribution
scale_test | Likelihood ratio tests of model terms in scale and nominal formulae
scale_test.clm | Likelihood ratio tests of model terms in scale and nominal formulae
slice | Slice the likelihood of a clm
slice.clm | Slice the likelihood of a clm
soup | Discrimination study of packet soup
VarCorr | Extract variance and correlation parameters
VarCorr.clmm | Extract variance and correlation parameters
wine | Bitterness of wine