A GEE Approach to Determine Sample Size for Pre- and Post-Intervention Experiments with Dropout.
Comput Stat Data Anal. 2014 Jan;69:10.1016/j.csda.2013.07.037. doi: 10.1016/j.csda.2013.07.037.
Comput Stat Data Anal. 2014.
PMID: 24293779
Free PMC article.