Package: SurrogateSeq
Type: Package
Title: Group Sequential Testing of a Treatment Effect Using a Surrogate
        Marker
Version: 1.1
Authors@R: c(person("Layla", "Parast", role = c("aut", "cre"), email = "parast@austin.utexas.edu"), person("Jay", "Bartroff", role = c("aut"), email = "bartroff@austin.utexas.edu"))
Description: Provides functions to implement group sequential procedures that allow for early stopping to declare efficacy using a surrogate marker and the possibility of futility stopping.   More details are available in: Parast, L. and Bartroff, J (2024) <doi:10.1093/biomtc/ujae108>. A tutorial for this package can be found at <https://www.laylaparast.com/surrogateseq>. A Shiny App implementing the methods can be found at <https://parastlab.shinyapps.io/SurrogateSeqApp/>.
License: GPL
Imports: stats, MASS, ggplot2
NeedsCompilation: no
Packaged: 2026-01-05 21:00:21 UTC; parastlm
Author: Layla Parast [aut, cre],
  Jay Bartroff [aut]
Maintainer: Layla Parast <parast@austin.utexas.edu>
Depends: R (>= 3.5.0)
Repository: CRAN
Date/Publication: 2026-01-08 03:50:17 UTC
Built: R 4.6.0; ; 2026-04-28 12:00:25 UTC; unix
