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LPower

Calculates Power, Sample Size, or Detectable Effect for Longitudinal Analyses

v0.1.1 · Dec 11, 2019 · Unlimited

Description

Computes power, or sample size or the detectable difference for a repeated measures model with attrition. It requires the variance covariance matrix of the observations but can compute this matrix for several common random effects models. See Diggle, P, Liang, KY and Zeger, SL (1994, ISBN:9780198522843).

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

CRAN incoming feasibility

Maintainer: ‘David A. Schoenfeld <Dschoenfeld@mgh.harvard.edu>’

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  Authors@R: person(given = c("David", "A."),
                    family = "Schoenfeld",
                    role = c("aut", "cre"),
                    email = "dschoenfeld@mgh.harvard.edu")
as necessary.
NOTE r-devel-linux-x86_64-debian-gcc

CRAN incoming feasibility

Maintainer: ‘David A. Schoenfeld <Dschoenfeld@mgh.harvard.edu>’

No Authors@R field in DESCRIPTION.
Please add one, modifying
  Authors@R: person(given = c("David", "A."),
                    family = "Schoenfeld",
                    role = c("aut", "cre"),
                    email = "dschoenfeld@mgh.harvard.edu")
as necessary.
NOTE r-oldrel-macos-arm64

LazyData

'LazyData' is specified without a 'data' directory
NOTE r-oldrel-macos-x86_64

LazyData

'LazyData' is specified without a 'data' directory
NOTE r-oldrel-windows-x86_64

LazyData

'LazyData' is specified without a 'data' directory

Check History

NOTE 9 OK · 5 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE Mar 10, 2026
NOTE r-devel-linux-x86_64-debian-clang

CRAN incoming feasibility

Maintainer: ‘David A. Schoenfeld <Dschoenfeld@mgh.harvard.edu>’

No Authors@R field in DESCRIPTION.
Please add one, modifying
  Authors@R: person(given = c("David", "A."),
                    family = "Schoenfeld",
                    role = c("aut", "cre"),
                    email = "dschoenfeld@mgh.harvard.edu")
as necessary.
NOTE r-devel-linux-x86_64-debian-gcc

CRAN incoming feasibility

Maintainer: ‘David A. Schoenfeld <Dschoenfeld@mgh.harvard.edu>’

No Authors@R field in DESCRIPTION.
Please add one, modifying
  Authors@R: person(given = c("David", "A."),
                    family = "Schoenfeld",
                    role = c("aut", "cre"),
                    email = "dschoenfeld@mgh.harvard.edu")
as necessary.
NOTE r-oldrel-macos-arm64

LazyData

'LazyData' is specified without a 'data' directory
NOTE r-oldrel-macos-x86_64

LazyData

'LazyData' is specified without a 'data' directory
NOTE r-oldrel-windows-x86_64

LazyData

'LazyData' is specified without a 'data' directory

Dependency Network

Dependencies Reverse dependencies nlme MASS LPower

Version History

new 0.1.1 Mar 10, 2026
updated 0.1.1 ← 0.1.0 diff Dec 10, 2019
new 0.1.0 May 10, 2018