# ordinalCont: Ordinal Regression Analysis for Continuous Scales

A regression framework for response variables which are continuous self-rating scales such as the Visual Analog Scale (VAS) used in pain assessment, or the Linear Analog Self-Assessment (LASA) scales in quality of life studies. These scales measure subjects' perception of an intangible quantity, and cannot be handled as ratio variables because of their inherent nonlinearity. We treat them as ordinal variables, measured on a continuous scale. A function (the g function, currently the generalized logistic function) connects the scale with an underlying continuous latent variable. The link function is the inverse of the CDF of the assumed underlying distribution of the latent variable. Currently the logit link, which corresponds to a standard logistic distribution, is implemented.

- Author
- Maurizio Manuguerra [aut, cre], Gillian Heller [aut]
- Date of publication
- 2015-05-26 08:24:22
- Maintainer
- Maurizio Manuguerra <maurizio.manuguerra@mq.edu.au>
- License
- GPL (>= 2)
- Version
- 0.4

## Man pages

- anova.ocm
- Anova method for Continuous Ordinal Fits
- anova.ocmm
- Anova method for Continuous Ordinal Mixed Model Fits
- ANZ0001
- ANZ0001 trial
- dg_glf
- Derivative of generalized logistic g function
- extractAIC.ocm
- Extract AIC from a fitted Continuous Ordinal Model
- extractAIC.ocmm
- Extract AIC from a fitted Continuous Ordinal Mixed Model
- g_glf
- Generalized logistic g function
- g_glf_inv
- Inverse of generalized logistic g function
- logLik.ocm
- Extract Log-likelihood for a Continuous Ordinal Model
- logLik.ocmm
- Extract Log-likelihood for a Continuous Ordinal Mixed Model
- negloglik_glf
- Log-likelihood function for the fixed-effects model
- negloglik_glf_rnd
- Log-likelihood function for the mixed-effects model
- ocm
- Ordinal regression for continuous scales
- ocmm
- Ordinal regression for continuous scales with mixed effects
- ordinalCont-package
- ordinalCont-package
- plot.ocm
- Plot method for Continuous Ordinal Fits
- plot.ocmm
- Plot method for Continuous Ordinal Mixed Model Fits
- plot.predict.ocm
- Plot probability densities from output of predict method
- predict.ocm
- Predict method for Continuous Ordinal Fits
- print.anova.ocm
- Print anova.ocm objects
- print.anova.ocmm
- Print anova.ocmm objects
- print.ocm
- Print continuous ordinal regression objects
- print.ocmm
- Print a Continuous Ordinal Mixed Model Object
- print.predict.ocm
- Print the output of predict method
- summary.ocm
- Summarizing Continuous Ordinal Fits
- summary.ocmm
- Summarizing Continuous Ordinal Mixed Model Fits
- vcov.ocm
- Variance-Covariance Matrix for a Fitted Model Object
- vcov.ocmm
- Variance-Covariance Matrix for a Fitted Continuous Ordinal...

## Files in this package

ordinalCont |

ordinalCont/NAMESPACE |

ordinalCont/data |

ordinalCont/data/ANZ0001.rda |

ordinalCont/R |

ordinalCont/R/utils.R |

ordinalCont/R/gfunction.R |

ordinalCont/R/ocm.methods.R |

ordinalCont/R/ocmm.R |

ordinalCont/R/ocmm.methods.R |

ordinalCont/R/ordinalCont.R |

ordinalCont/R/ocm.R |

ordinalCont/MD5 |

ordinalCont/DESCRIPTION |

ordinalCont/man |

ordinalCont/man/ANZ0001.Rd |

ordinalCont/man/ocmm.Rd |

ordinalCont/man/summary.ocmm.Rd |

ordinalCont/man/ordinalCont-package.Rd |

ordinalCont/man/anova.ocm.Rd |

ordinalCont/man/dg_glf.Rd |

ordinalCont/man/plot.ocmm.Rd |

ordinalCont/man/summary.ocm.Rd |

ordinalCont/man/plot.ocm.Rd |

ordinalCont/man/print.ocmm.Rd |

ordinalCont/man/anova.ocmm.Rd |

ordinalCont/man/negloglik_glf.Rd |

ordinalCont/man/print.anova.ocm.Rd |

ordinalCont/man/extractAIC.ocmm.Rd |

ordinalCont/man/plot.predict.ocm.Rd |

ordinalCont/man/print.anova.ocmm.Rd |

ordinalCont/man/print.ocm.Rd |

ordinalCont/man/logLik.ocmm.Rd |

ordinalCont/man/g_glf_inv.Rd |

ordinalCont/man/vcov.ocm.Rd |

ordinalCont/man/logLik.ocm.Rd |

ordinalCont/man/ocm.Rd |

ordinalCont/man/negloglik_glf_rnd.Rd |

ordinalCont/man/g_glf.Rd |

ordinalCont/man/print.predict.ocm.Rd |

ordinalCont/man/predict.ocm.Rd |

ordinalCont/man/vcov.ocmm.Rd |

ordinalCont/man/extractAIC.ocm.Rd |