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

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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install.packages("LPower")

0.1.0 by David A. Schoenfeld, 9 months ago


Browse source code at https://github.com/cran/LPower


Authors: David A. Schoenfeld


Documentation:   PDF Manual  


Unlimited license


Imports nlme, MASS, stats


See at CRAN