longpower - Sample Size Calculations for Longitudinal Data
Compute power and sample size for linear models of
longitudinal data. Supported models include mixed-effects
models and models fit by generalized least squares and
generalized estimating equations. The package is described in
Iddi and Donohue (2022) <DOI:10.32614/RJ-2022-022>. Relevant
formulas are derived by Liu and Liang (1997)
<DOI:10.2307/2533554>, Diggle et al (2002)
<ISBN:9780199676750>, and Lu, Luo, and Chen (2008)
<DOI:10.2202/1557-4679.1098>.
