longpower (1.016)
Sample Size Calculations for Longitudinal Data.
https://bitbucket.org/mdonohue/longpower
http://cran.rproject.org/web/packages/longpower
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.
Maintainer:
Michael C. Donohue
Author(s): Michael C. Donohue, Anthony C. Gamst, Steven D. Edland
License: GPL (>= 2)
Uses: lme4, nlme, gee, testthat, knitr
Released 9 months ago.
10 previous versions
 longpower_1.015. Released 11 months ago.
 longpower_1.011. Released over 2 years ago.
 longpower_1.010. Released over 3 years ago.
 longpower_1.09. Released almost 4 years ago.
 longpower_1.08. Released almost 4 years ago.
 longpower_1.07. Released almost 4 years ago.
 longpower_1.04. Released over 4 years ago.
 longpower_1.03. Released over 4 years ago.
 longpower_1.02. Released almost 5 years ago.
 longpower_1.01. Released over 6 years ago.
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