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ordinal

Regression Models for Ordinal Data

v2025.12-29 · Jan 10, 2026 · GPL (>= 2)

Description

Implementation of cumulative link (mixed) models also known as ordered regression models, proportional odds models, proportional hazards models for grouped survival times and ordered logit/probit/... models. Estimation is via maximum likelihood and mixed models are fitted with the Laplace approximation and adaptive Gauss-Hermite quadrature. Multiple random effect terms are allowed and they may be nested, crossed or partially nested/crossed. Restrictions of symmetry and equidistance can be imposed on the thresholds (cut-points/intercepts). Standard model methods are available (summary, anova, drop-methods, step, confint, predict etc.) in addition to profile methods and slice methods for visualizing the likelihood function and checking convergence.

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14 OK
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r-devel-linux-x86_64-debian-clang OK
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r-devel-linux-x86_64-fedora-gcc OK
r-devel-macos-arm64 OK
r-devel-windows-x86_64 OK
r-oldrel-macos-arm64 OK
r-oldrel-macos-x86_64 OK
r-oldrel-windows-x86_64 OK
r-patched-linux-x86_64 OK
r-release-linux-x86_64 OK
r-release-macos-arm64 OK
r-release-macos-x86_64 OK
r-release-windows-x86_64 OK

Check History

OK 14 OK · 0 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE Mar 10, 2026

Reverse Dependencies (55)

Dependency Network

Dependencies Reverse dependencies ucminf MASS Matrix numDeriv nlme RcmdrPlugin.MPAStats metaSDTreg AutoScore EQUALSTATS GRAB crch drord ecoCopula gomp jomo optimus pda projpred remiod serp +40 more reverse deps ordinal

Version History

new 2025.12-29 Mar 10, 2026
updated 2025.12-29 ← 2023.12-4.1 diff Jan 9, 2026
updated 2023.12-4.1 ← 2023.12-4 diff Aug 18, 2024
updated 2023.12-4 ← 2022.11-16 diff Dec 3, 2023
updated 2022.11-16 ← 2019.12-10 diff Nov 15, 2022
updated 2019.12-10 ← 2019.4-25 diff Dec 14, 2019
updated 2019.4-25 ← 2019.3-9 diff Apr 24, 2019
updated 2019.3-9 ← 2018.8-25 diff Mar 8, 2019
updated 2018.8-25 ← 2018.4-19 diff Aug 25, 2018
updated 2018.4-19 ← 2015.6-28 diff Apr 18, 2018
updated 2015.6-28 ← 2015.1-21 diff Jun 27, 2015
updated 2015.1-21 ← 2014.12-22 diff Jan 20, 2015
updated 2014.12-22 ← 2014.11-14 diff Dec 22, 2014
updated 2014.11-14 ← 2014.11-12 diff Nov 13, 2014
updated 2014.11-12 ← 2013.9-30 diff Nov 12, 2014
updated 2013.9-30 ← 2012.09-11 diff Sep 29, 2013
updated 2012.09-11 ← 2012.09-10 diff Sep 11, 2012
updated 2012.09-10 ← 2012.01-19 diff Sep 9, 2012
updated 2012.01-19 ← 2011.09-14 diff Jan 19, 2012
updated 2011.09-14 ← 2011.08-12 diff Sep 13, 2011