Web-based Sample Size Calculator for Cluster-Randomized and Stepped-Wedge Designs Posted on July 30, 2020August 4, 2020 by coprhcon Join us as this presenter discusses this poster live on Tuesday, August 11, 2020 | Track D at 5:25 PM Mountain POSTER Loading... Taking too long? Reload document | Open in new tab VIDEO Posted in Poster Session, Study Design & Analysis.