Continuous and Dichotomized Index Predictors Based on Distribution Quantiles R package Qindex version 0.2.0 The author has retired from academic research. Accordingly, this package should not be considered a validated tool for use in peer-reviewed publications or as the basis for grant applications. Backward compatibility with user-code published in <doi:10.1186/s12859-023-05408-8> and <doi:10.1016/j.labinv.2023.100158> is not maintained in versions >= 0.4.0 (June 2026) of this package. The authors of those publications are the appropriate contacts for reproducibility inquiries. Software Depends: R (>= 4.6), Imports: cli Suggests: boot Tingting Zhan <tingtingzhan@gmail.com> Comprehensive R Archive Network (CRAN) Tingting Zhan [aut, cre] (ORCID: <https://orcid.org/0000-0001-9971-4844>) GPL-2 2026-07-17 application/tgz https://CRAN.R-project.org/package=Qindex doi:10.32614/CRAN.package.Qindex en-US