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ffmanova

Fifty-Fifty MANOVA

v1.1.2 · Oct 18, 2023 · GPL-2

Description

General linear modeling with multiple responses (MANCOVA). An overall p-value for each model term is calculated by the 50-50 MANOVA method by Langsrud (2002) <doi:10.1111/1467-9884.00320>, which handles collinear responses. Rotation testing, described by Langsrud (2005) <doi:10.1007/s11222-005-4789-5>, is used to compute adjusted single response p-values according to familywise error rates and false discovery rates (FDR). The approach to FDR is described in the appendix of Moen et al. (2005) <doi:10.1128/AEM.71.4.2086-2094.2005>. Unbalanced designs are handled by Type II sums of squares as argued in Langsrud (2003) <doi:10.1023/A:1023260610025>. Furthermore, the Type II philosophy is extended to continuous design variables as described in Langsrud et al. (2007) <doi:10.1080/02664760701594246>. This means that the method is invariant to scale changes and that common pitfalls are avoided.

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r-devel-linux-x86_64-debian-clang OK
r-devel-linux-x86_64-debian-gcc OK
r-devel-linux-x86_64-fedora-clang OK
r-devel-linux-x86_64-fedora-gcc OK
r-devel-macos-arm64 OK
r-devel-windows-x86_64 OK
r-oldrel-macos-arm64 OK
r-oldrel-macos-x86_64 OK
r-oldrel-windows-x86_64 OK
r-patched-linux-x86_64 OK
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r-release-macos-arm64 OK
r-release-macos-x86_64 OK
r-release-windows-x86_64 OK

Check History

OK 14 OK · 0 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE Mar 10, 2026

Version History

new 1.1.2 Mar 10, 2026
updated 1.1.2 ← 1.1.1 diff Oct 17, 2023
updated 1.1.1 ← 1.1.0 diff Mar 27, 2022
updated 1.1.0 ← 1.0.0 diff Mar 27, 2019
updated 1.0.0 ← 0.9.1 diff Jan 16, 2019
updated 0.9.1 ← 0.2-2 diff Nov 11, 2018
updated 0.2-2 ← 0.1-1.2 diff Nov 30, 2012
updated 0.1-1.2 ← 0.1-1.1 diff Oct 28, 2012
updated 0.1-1.1 ← 0.1-1 diff Feb 22, 2009
updated 0.1-1 ← 0.1-0 diff Apr 19, 2007
new 0.1-0 Aug 18, 2006