sprtt: Sequential Probability Ratio Tests Toolbox
A toolbox for Sequential Probability Ratio Tests (SPRT) based on Wald (1945) <doi:10.2134/agronj1947.00021962003900070011x>. SPRTs are applied during the sampling process, ideally after each observation, and at every stage return a decision to either continue sampling or terminate and accept one of the specified hypotheses. The 'seq_ttest()' function performs one-sample, two-sample, and paired t-tests for one- and two-sided hypotheses (Schnuerch & Erdfelder (2019) <doi:10.1037/met0000234>). The 'seq_anova()' function performs a sequential one-way fixed effects ANOVA (Steinhilber et al. (2024) <doi:10.1037/met0000677>). The 'plan_sample_size()' function helps plan sequential studies by simulating required sample sizes across a range of effect sizes. For more information, see the vignettes browseVignettes(package = "sprtt") or the package website <https://meikesteinhilber.github.io/sprtt/>.
| Version: | 0.3.1 |
| Depends: | R (≥ 3.5.0) |
| Imports: | rappdirs, methods, stats, dplyr, MBESS, purrr, glue, ggplot2, lifecycle, knitr, rmarkdown, gt, ggtext, scales, piggyback |
| Suggests: | testthat (≥ 3.0.0), testthis, withr, xml2, effsize, effectsize, vdiffr, diffviewer |
| Published: | 2026-05-06 |
| DOI: | 10.32614/CRAN.package.sprtt |
| Author: | Meike Snijder-Steinhilber
 [aut, cre],
Martin Schnuerch
[aut, ths],
Anna-Lena Schubert
[aut, ths] |
| Maintainer: | Meike Snijder-Steinhilber <Meike.Steinhilber at aol.com> |
| BugReports: | https://github.com/MeikeSteinhilber/sprtt/issues |
| License: | AGPL (≥ 3) |
| URL: | https://meikesteinhilber.github.io/sprtt/ |
| NeedsCompilation: | no |
| Language: | en-US |
| Materials: | README, NEWS |
| CRAN checks: | sprtt results |
Documentation:
| Reference manual: | sprtt.html , sprtt.pdf |
| Vignettes: |
Developer Guide: sprtt Package (source, R code) Sequential One-Way ANOVA (source, R code) Sample Size Planning for Sequential ANOVAs (source, R code) SPRTs (source) Sequential t-Test (source, R code) Use Case (source, R code) How to use the sprtt package (source, R code) |
Downloads:
| Package source: | sprtt_0.3.1.tar.gz |
| Windows binaries: | r-devel: sprtt_0.2.0.zip, r-release: sprtt_0.2.0.zip, r-oldrel: sprtt_0.2.0.zip |
| macOS binaries: | r-release (arm64): sprtt_0.2.0.tgz, r-oldrel (arm64): sprtt_0.2.0.tgz, r-release (x86_64): sprtt_0.2.0.tgz, r-oldrel (x86_64): sprtt_0.2.0.tgz |
| Old sources: | sprtt archive |
Linking:
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