ssanv

1.1

Sample Size Adjusted for Nonadherence or Variability of Input Parameters

5packages depend

48.5Kdownloads / year

20.7%test coverage

11/13checks pass

Overview

About

Maintained by Michael P. FayFirst published 2006-02-144 releasesCRAN page ↗

A set of functions to calculate sample size for two-sample difference in means tests. Does adjustments for either nonadherence or variability that comes from using data to estimate parameters.

Install

R (CRAN)Ubuntu (r2u)Fedora (COPR)openSUSE (OBS)

install.packages("ssanv", repos = "https://cloud.r-project.org/")

Installs the current CRAN release. Prebuilt binaries on Windows and macOS.

Release

# enable cranapt (r2u) if it is not already set up, then install
grep -rqs r2u.stat.illinois.edu /etc/apt/sources.list /etc/apt/sources.list.d/ \
  || curl -fsSL https://raw.githubusercontent.com/eddelbuettel/r2u/master/inst/scripts/add_cranapt_noble.sh | sudo bash
sudo apt install -y r-cran-ssanv

Fast Ubuntu binaries via r2u (no compilation). The cranapt setup runs once and is skipped when it is already enabled.

bspm (used by r2u) also needs make: sudo apt install make

# enable the iucar/cran COPR if it is not already present, then install
ls /etc/yum.repos.d/*iucar*cran*.repo >/dev/null 2>&1 \
  || sudo dnf copr enable -y iucar/cran
sudo dnf install -y R-CRAN-ssanv

RPMs from the iucar/cran COPR, rebuilt from CRAN.

For install.packages() integration in R, also: sudo dnf install R-CoprManager

# add the autoCRAN OBS repo (Tumbleweed) if it is missing, then install
zypper -q lr | grep -qi autoCRAN \
  || sudo zypper addrepo https://download.opensuse.org/repositories/devel:/languages:/R:/autoCRAN/openSUSE_Tumbleweed/devel:languages:R:autoCRAN.repo
sudo zypper install -y R-ssanv

RPMs auto-built from CRAN on openSUSE OBS (Tumbleweed).

Health

CRAN checks

2NOTE11OK

Failing flavors

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

Slowest check: 55 s · r-release-windows-x86_64

Code health

Yes

Tests · ratio 0.11

20.7%

Coverage · measured lines

Dependencies · direct

Check history

NOTE2026-03-10
12 OK · 2 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE

Documentation

READMENoVignettesNopkgdown siteNoNEWSNoCode of conductNoContributing guideNo

Examples that run: 100%
Documented parameters: not tracked
Return-value docs: not tracked
References docs: 100%

Downloads

48.5K

CRAN downloads in the past year

Rank #2,681 · ~133/day · ~4K/mo

Releases R versions

Daily download trend is not available in this view yet.

1.8K30 days

6.9K90 days

48.5K1 year

Compare downloads with other packages →

Also on152 r2u18 autocran1.5K conda_forge90 c2d4u

Dependencies

Declared dependencies

0 external dependencies (excludes base and recommended)

Depends (2)

R >= 2.1.1stats

Imports (0)

none

LinkingTo (0)

none

Suggests (0)

none

Enhances (0)

none

Dependency license breakdown →

Reverse dependencies

5direct

6indirect

exact2x2 exactci nivm rPowerSampleSize asht

Code & Tests

People & History

People (0)

Author records are not tracked yet for this package.

Listed in earlier versions (2)

Michael Fay

no longer listed · 1.0 to 1.0-2

Michael P. Fay

no longer listed · 1.1

Package Timeline

4 releases. Pick two to compare their code metrics. R releases are shown for context.

R
R 4.6.0 released · 2026-04-24
R
R 4.5.0 released · 2025-04-11
R
R 4.4.0 released · 2024-04-24
R
R 4.3.0 released · 2023-04-21
R
R 4.2.0 released · 2022-04-22
R
R 4.1.0 released · 2021-05-18
R
R 4.0.0 released · 2020-04-24
R
R 3.6.0 released · 2019-04-26
R
R 3.5.0 released · 2018-04-23
R
R 3.4.0 released · 2017-04-21
R
R 3.3.0 released · 2016-05-03
1.1Latest
2015-06-23 · current release · diff ↗
R
R 3.2.0 released · 2015-04-16
R
R 3.1.0 released · 2014-04-10
R
R 3.0.0 released · 2013-04-03
1.0-2
2012-10-29 · diff ↗

Show 16 earlier events

R
R 2.15.0 released · 2012-03-30
R
R 2.14.0 released · 2011-10-31
R
R 2.13.0 released · 2011-04-13
R
R 2.12.0 released · 2010-10-15
R
R 2.11.0 released · 2010-04-22
R
R 2.10.0 released · 2009-10-26
1.0-1
2009-10-13 · diff ↗
R
R 2.9.0 released · 2009-04-17
R
R 2.8.0 released · 2008-10-20
R
R 2.7.0 released · 2008-04-22
R
R 2.6.0 released · 2007-10-03
R
R 2.5.0 released · 2007-04-24
R
R 2.4.0 released · 2006-10-03
R
R 2.3.0 released · 2006-04-24
1.0
2006-02-14
R
R 2.2.0 released · 2005-10-06

Package metadata

First published: 2006-02-14
Total releases: 4 / 20 yrs
License: GPL-3 OSI
Minimum R: ≥ 2.1.1
Bundled data: 0.3 KB / 1 file
Download size: 13 KB
Installed size: not tracked yet
With dependencies: not tracked yet

Appears in task views

Clinical Trial Design, Monitoring, Analysis and Reporting

Report a problem with this page →