[R] Repeated measures ANOVA for unbalanc

John Sorkin JSorkin at grecc.umaryland.edu
Thu Nov 21 23:07:42 CET 2013

R 3.0.1
Windows 7 
Rstudio 0.97.551
The last time I thought about using lmer to run an unbalanced repeated measures ANOVA, I found that the package did not return p values or SEs. I believe this was because Professor Bates had important questions about the theory behind the required computations and was in the process of developing a new, improved algorithm. Has this situation changed? Has Prof. Bates, or anyone else, implemented a repeated measures ANOVA package for R that can be perform unbalanced repeated measures ANOVA and which produces valid p values and SEs? If so, what is the name of the package?
Thank you,
John David Sorkin M.D., Ph.D.
Professor of Medicine
Chief, Biostatistics and Informatics
University of Maryland School of Medicine Division of Gerontology and Geriatric Medicine
Baltimore VA Medical Center
10 North Greene Street
Baltimore, MD 21201-1524
(Phone) 410-605-7119
(Fax) 410-605-7913 (Please call phone number above prior to faxing) 

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