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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: not available, r-release: not available, r-oldrel: not available
macOS binaries: r-release (arm64): betaregscale_2.6.9.tgz, r-oldrel (arm64): not available, r-release (x86_64): not available, r-oldrel (x86_64): not available

Linking:

Please use the canonical form https://CRAN.R-project.org/package=betaregscale to link to this page.

These binaries (installable software) and packages are in development.
They may not be fully stable and should be used with caution. We make no claims about them.