Package: POSSA Title: Power Simulation for Sequential Analyses and Multiple Hypotheses Version: 0.6.5 Date: 2025-08-21 Authors@R: c(person("Gáspár", "Lukács", email = "lkcsgaspar@gmail.com", role = c("aut", "cre"))) Description: Calculates, via simulation, power and appropriate stopping alpha boundaries (and/or futility bounds) for sequential analyses (i.e., group sequential design) as well as for multiple hypotheses (multiple tests included in an analysis), given any specified global error rate. This enables the sequential use of practically any significance test, as long as the underlying data can be simulated in advance to a reasonable approximation. Lukács (2022) . URL: https://github.com/gasparl/possa Depends: R (>= 3.6.0) Imports: data.table, methods License: BSD_2_clause + file LICENSE Encoding: UTF-8 RoxygenNote: 7.3.2 Suggests: testthat (>= 3.0.0), knitr, rmarkdown, faux Config/testthat/edition: 3 VignetteBuilder: knitr Repository: https://gasparl.r-universe.dev Date/Publication: 2025-08-21 06:12:57 UTC RemoteUrl: https://github.com/gasparl/possa RemoteRef: HEAD RemoteSha: 339b98c6427de22d36efe6bb7e549dfecb17df3d NeedsCompilation: no Packaged: 2026-10-16 07:55:36 UTC; root Author: Gáspár Lukács [aut, cre] Maintainer: Gáspár Lukács