Primary Event Censored Distributions R package primarycensored version 1.5.1 Provides functions for working with primary event censored distributions and 'Stan' implementations for use in Bayesian modeling. Primary event censored distributions are useful for modeling delayed reporting scenarios in epidemiology and other fields (Charniga et al. (2024) <doi:10.48550/arXiv.2405.08841>). It also provides support for arbitrary delay distributions, a range of common primary distributions, and allows for truncation and secondary event censoring to be accounted for (Park et al. (2024) <doi:10.1101/2024.01.12.24301247>). A subset of common distributions also have analytical solutions implemented, allowing for faster computation. In addition, it provides multiple methods for fitting primary event censored distributions to data via optional dependencies. Software Depends: R (>= 4.0.0) Suggests: bookdown, cmdstanr, dplyr, fitdistrplus, knitr, ggplot2, rmarkdown, spelling, testthat (>= 3.1.9), usethis, withr Sam Abbott <contact@samabbott.co.uk> Comprehensive R Archive Network (CRAN) Sam Abbott [aut, cre, cph] (ORCID: <https://orcid.org/0000-0001-8057-8037>), Sam Brand [aut] (ORCID: <https://orcid.org/0000-0003-0645-5367>), Adam Howes [ctb] (ORCID: <https://orcid.org/0000-0003-2386-4031>), James Mba Azam [aut] (ORCID: <https://orcid.org/0000-0001-5782-7330>), Carl Pearson [aut] (ORCID: <https://orcid.org/0000-0003-0701-7860>), Sebastian Funk [aut] (ORCID: <https://orcid.org/0000-0002-2842-3406>), Kelly Charniga [aut] (ORCID: <https://orcid.org/0000-0002-7648-7041>) MIT + file LICENSE (https://CRAN.R-project.org/package=primarycensored/LICENSE) 2026-06-15 application/tgz https://CRAN.R-project.org/package=primarycensored doi:10.32614/CRAN.package.primarycensored en-GB