Additional file 2: of Understanding the cluster randomised crossover design: a graphical illustration of the components of variation and a sample size tutorial Sarah Arnup Joanne McKenzie Karla Hemming David Pilcher Andrew Forbes 10.6084/m9.figshare.c.3854263_D2.v2 https://springernature.figshare.com/articles/dataset/Additional_file_2_of_Understanding_the_cluster_randomised_crossover_design_a_graphical_illustraton_of_the_components_of_variation_and_a_sample_size_tutorial/5314123 Binary outcomes sample size Stata do file. Stata do file to perform sample size calculations for binary outcomes using formulae presented in the ‘Performing a sample size calculation’ section, for a given set of sample size parameters. (DO 2 kb) 2017-08-15 05:00:00 Cluster randomised Crossover Sample size Intracluster correlation Within-period correlation Between-period correlation Components of variability