ordinalCont: Ordinal Regression Analysis for Continuous Scales

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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

View on CRAN

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