Mixed-effects regression for any outcome, plus the full survival roster; joint and multistate models via cross-model links.
In the open
Our packages are open source, and so are the numbers behind them. Each engine’s adoption — downloads, citations, releases — is read from its sources, and this page shows what it finds, honestly qualified. No package is measured by a figure without its caveat.
By engine
Measured 2026-10-09 from CRAN, OpenAlex and GitHub.
Bayesian flexible-parametric survival — a bayesmh prefix over stmerlin.
Modelled excess-hazard and relative survival — a fitted reference rate, not external life tables.
Multilevel flexible-parametric mixed-effects survival — recurrent and interval-censored outcomes.
Quality-adjusted life years after a joint longitudinal-survival model fitted with merlin — the reference implementation of its paper.
How to read these. CRAN counts one mirror, not a census; the total is all-time, since 2012. Citations, being language-agnostic, count Stata and R reach as one.