Analysis and reporting of stratified cluster randomized trials—a systematic survey

BackgroundIn order to correctly assess the effect of intervention from stratified cluster randomized trials (CRTs), it is necessary to adjust for both clustering and stratification, as failure to do so leads to misleading conclusions about the intervention effect. We have conducted a systematic survey to examine the current practices about analysis and reporting of stratified CRTs.MethodWe used the search terms to identify the stratified CRTs …