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 protected]>|
|License||GPL (>= 2)|
|Package repository||View on CRAN|
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