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.
|Author||Rune Haubo Bojesen Christensen [aut, cre]|
|Date of publication||2015-06-28 16:50:54|
|Maintainer||Rune Haubo Bojesen Christensen <email@example.com>|
|License||GPL (>= 2)|
addtermOld: Try all one-term additions to and deletions from a model
anovaOld: Likelihood ratio test of cumulative link models
clm: Cumulative Link Models
clm.control: Set control parameters for cumulative link models
clm.controlOld: Set control parameters for cumulative link models
clm.fit: Fit Cumulative Link Models
clmm: Cumulative Link Mixed Models
clmm.control: Set control parameters for cumulative link mixed models
clmm.controlOld: Set control parameters for cumulative link mixed models
clmmOld: Cumulative link mixed models
clmOld: Cumulative link models
confint.clm: Confidence intervals and profile likelihoods for parameters...
confint.clmmOld: Confidence intervals and profile likelihoods for the standard...
confintOld: Confidence intervals and profile likelihoods for parameters...
convergence.clm: Check convergence of cumulative link models
dropCoef: Ensure Full Rank Design Matrix
gfun: Gradients of common densities
gumbel: The Gumbel Distribution
income: Income distribution (percentages) in the Northeast US
lgamma: The log-gamma distribution
nominal.test: Likelihood ratio tests of model terms in scale and nominal...
ordinal-package: Regression Models for Ordinal Data via Cumulative Link...
predict: Predict Method for CLM fits
predictOld: Predict Method for CLM fits
ranef: Extract conditional modes and conditional variances from clmm...
slice.clm: Slice the likelihood of a clm
soup: Discrimination study of packet soup
updateOld: Update method for cumulative link models
VarCorr: Extract variance and correlation parameters
wine: Bitterness of wine