Type: Package
Package: sprtt
Title: Sequential Probability Ratio Tests Toolbox
Version: 0.3.1
Date: 2026-04-13
Authors@R: 
    c(person(given = "Meike",
             family = "Snijder-Steinhilber",
             role = c("aut", "cre"),
             email = "Meike.Steinhilber@aol.com",
             comment = c(ORCID = "0000-0002-7144-2100")),
      person(given = "Martin",
             family = "Schnuerch",
             role = c("aut", "ths"),
             comment = c(ORCID = "0000-0001-6531-2265")),
      person(given = "Anna-Lena",
             family = "Schubert",
             role = c("aut", "ths"),
             comment = c(ORCID = "0000-0001-7248-0662"))
      )
Maintainer: Meike Snijder-Steinhilber <Meike.Steinhilber@aol.com>
Description: 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/>.
License: AGPL (>= 3)
URL: https://meikesteinhilber.github.io/sprtt/
BugReports: https://github.com/MeikeSteinhilber/sprtt/issues
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
VignetteBuilder: knitr
Encoding: UTF-8
Language: en-US
LazyData: yes
LazyDataCompression: xz
Roxygen: list(markdown = TRUE)
RoxygenNote: 7.3.3
Config/testthat/edition: 3
Config/pak/sysreqs: cmake git make libicu-dev libjpeg-dev libpng-dev
        libuv1-dev libxml2-dev libssl-dev libnode-dev
Repository: https://meikesteinhilber.r-universe.dev
Date/Publication: 2026-05-20 07:32:55 UTC
RemoteUrl: https://github.com/meikesteinhilber/sprtt
RemoteRef: HEAD
RemoteSha: 371a9c7c75af56ea95e5badd2f9b8b51d8093af2
NeedsCompilation: no
Packaged: 2026-06-19 07:10:09 UTC; root
Author: Meike Snijder-Steinhilber [aut, cre] (ORCID:
    <https://orcid.org/0000-0002-7144-2100>),
  Martin Schnuerch [aut, ths] (ORCID:
    <https://orcid.org/0000-0001-6531-2265>),
  Anna-Lena Schubert [aut, ths] (ORCID:
    <https://orcid.org/0000-0001-7248-0662>)