grpseq

Group Sequential Analysis of Clinical Trials

v1.0 · Dec 6, 2021 · GPL (>= 2)

Description

Design of group sequential trials, including non-binding futility analysis at multiple time points (Gallo, Mao, and Shih, 2014, <doi:10.1080/10543406.2014.932285>).

Downloads

CRAN

244

Last 30 days

17604th

769

Last 90 days

2.7K

Last year

Trend: +23.9% (30d vs prior 30d)

r2u CRAN

Last 30 days

Last 90 days

102

Last year

Trend: -40% (30d vs prior 30d)

CRAN Check Status

2 NOTE

11 OK

Show all 13 flavors

Flavor	Status	Time
r-devel-linux-x86_64-debian-clang	NOTE	30.3s
r-devel-linux-x86_64-debian-gcc	NOTE	24.2s
r-devel-linux-x86_64-fedora-clang	OK	42.7s
r-devel-linux-x86_64-fedora-gcc	OK	73.9s
r-devel-windows-x86_64	OK	51s
r-oldrel-macos-arm64	OK
r-oldrel-macos-x86_64	OK	42s
r-oldrel-windows-x86_64	OK	59s
r-patched-linux-x86_64	OK	28.5s
r-release-linux-x86_64	OK
r-release-macos-arm64	OK	15s
r-release-macos-x86_64	OK	55s
r-release-windows-x86_64	OK	49s

Check details (2 non-OK)

NOTE r-devel-linux-x86_64-debian-clang

CRAN incoming feasibility

Maintainer: ‘Lu Mao <lmao@biostat.wisc.edu>’

No Authors@R field in DESCRIPTION.
Please add one, modifying
  Authors@R: person(given = "Lu",
                    family = "Mao",
                    role = c("aut", "cre"),
                    email = "lmao@biostat.wisc.edu")
as necessary.

NOTE r-devel-linux-x86_64-debian-gcc

CRAN incoming feasibility

Maintainer: ‘Lu Mao <lmao@biostat.wisc.edu>’

No Authors@R field in DESCRIPTION.
Please add one, modifying
  Authors@R: person(given = "Lu",
                    family = "Mao",
                    role = c("aut", "cre"),
                    email = "lmao@biostat.wisc.edu")
as necessary.

Check History

NOTE 12 OK · 2 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE Mar 10, 2026

NOTE r-devel-linux-x86_64-debian-clang

CRAN incoming feasibility

Maintainer: ‘Lu Mao <lmao@biostat.wisc.edu>’

No Authors@R field in DESCRIPTION.
Please add one, modifying
  Authors@R: person(given = "Lu",
                    family = "Mao",
                    role = c("aut", "cre"),
                    email = "lmao@biostat.wisc.edu")
as necessary.

NOTE r-devel-linux-x86_64-debian-gcc

CRAN incoming feasibility

Maintainer: ‘Lu Mao <lmao@biostat.wisc.edu>’

No Authors@R field in DESCRIPTION.
Please add one, modifying
  Authors@R: person(given = "Lu",
                    family = "Mao",
                    role = c("aut", "cre"),
                    email = "lmao@biostat.wisc.edu")
as necessary.

Dependency Network

Version History

1 tracked

new 1.0 Mar 10, 2026

R Observatory began tracking this package on Mar 10, 2026; it first appeared on CRAN Dec 6, 2021. Releases before tracking aren’t shown.