In this article, we introduce a new command, clan, that conducts a cluster-level analysis of cluster randomized trials. The command simplifies adjusting for individual- and cluster-level covariates and can also account for a stratified design. It can be used to analyze a continuous, binary, or rate outcome.
Keywords: adjusting for covariates; analysis method; clan; cluster randomized trial; cluster summary analysis; few clusters; group randomized trial; st0727; stratified trial.