betaregscale: Beta Regression for Interval-Censored Scale-Derived Outcomes

Maximum-likelihood estimation of beta regression models for responses derived from bounded rating scales. Observations are treated as interval-censored on (0, 1) after a scale-to-unit transformation, and the likelihood is built from the difference of the beta CDF at the interval endpoints. The complete likelihood supports mixed censoring types: uncensored, left-censored, right-censored, and interval-censored observations. Both fixed- and variable-dispersion submodels are supported, with flexible link functions for the mean and precision components. A compiled C++ backend (via 'Rcpp' and 'RcppArmadillo') provides numerically stable, high-performance log-likelihood evaluation. Standard S3 methods (print(), summary(), coef(), fitted(), residuals(), predict(), plot(), confint(), vcov(), logLik(), AIC(), BIC()) are available for fitted objects.

Version: 2.6.9
Depends: R (≥ 4.1.0)
Imports: Formula, ggplot2, numDeriv, Rcpp (≥ 1.0.12), rlang, stats
LinkingTo: Rcpp, RcppArmadillo, RcppEigen
Suggests: betareg, gridExtra, knitr, MASS, rmarkdown, testthat (≥ 3.0.0)
Published: 2026-02-25
DOI: 10.32614/CRAN.package.betaregscale (may not be active yet)
Author: José Evandeilton Lopes ORCID iD [aut, cre], Wagner Hugo Bonat ORCID iD [aut]
Maintainer: José Evandeilton Lopes <evandeilton at gmail.com>
BugReports: https://github.com/evandeilton/betaregscale/issues
License: MIT + file LICENSE
URL: https://evandeilton.github.io/betaregscale/
NeedsCompilation: yes
Materials: README, NEWS
CRAN checks: betaregscale results

Documentation:

Reference manual: betaregscale.html , betaregscale.pdf
Vignettes: Advanced Workflows for High-Level Users (source, R code)
Analyst Tools for betaregscale (source, R code)
Introduction to betaregscale (source, R code)
Mixed-Effects Beta Interval Regression with brsmm (source, R code)

Downloads:

Package source: betaregscale_2.6.9.tar.gz
Windows binaries: r-devel: betaregscale_2.6.9.zip, r-release: not available, r-oldrel: not available
macOS binaries: r-release (arm64): betaregscale_2.6.9.tgz, r-oldrel (arm64): betaregscale_2.6.9.tgz, r-release (x86_64): betaregscale_2.6.9.tgz, r-oldrel (x86_64): betaregscale_2.6.9.tgz

Linking:

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