longpower: Sample Size Calculations for Longitudinal Data

The longpower package contains functions for computing power and sample size for linear models of longitudinal data based on the formula due to Liu and Liang (1997) and Diggle et al (2002). Either formula is expressed in terms of marginal model or Generalized Estimating Equations (GEE) parameters. This package contains functions which translate pilot mixed effect model parameters (e.g. random intercept and/or slope) into marginal model parameters so that the formulas of Diggle et al or Liu and Liang formula can be applied to produce sample size calculations for two sample longitudinal designs assuming known variance.

AuthorMichael C. Donohue, Anthony C. Gamst, Steven D. Edland
Date of publication2016-07-25 20:36:27
MaintainerMichael C. Donohue <mdonohue@usc.edu>
LicenseGPL (>= 2)
Version1.0-16
https://bitbucket.org/mdonohue/longpower

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longpower
longpower/inst
longpower/inst/CITATION
longpower/inst/doc
longpower/inst/doc/longpower.R
longpower/inst/doc/longpower.Rnw
longpower/inst/doc/longpower.pdf
longpower/tests
longpower/tests/testthat.R
longpower/tests/testthat
longpower/tests/testthat/tests.R
longpower/NAMESPACE
longpower/R
longpower/R/longpower-package.R longpower/R/power_mmrm.R longpower/R/diggle.linear.power.R longpower/R/edland.linear.power.R longpower/R/liu.liang.linear.power.R longpower/R/lmmpower.R longpower/R/print.power.longtest.R
longpower/vignettes
longpower/vignettes/longpower.bib
longpower/vignettes/longpower.Rnw
longpower/MD5
longpower/build
longpower/build/vignette.rds
longpower/DESCRIPTION
longpower/man
longpower/man/diggle.linear.power.Rd longpower/man/longpower-package.Rd longpower/man/lmmpower.Rd longpower/man/edland.linear.power.Rd longpower/man/liu.liang.linear.power.Rd longpower/man/power.mmrm.Rd longpower/man/print.power.longtest.Rd longpower/man/power.mmrm.ar1.Rd longpower/man/power.longtest.Rd

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