Kendra Plourde, PhD

The stepped wedge cluster randomized trial (SW-CRT) is an increasingly popular design f r evaluating health service delivery or policy interventions. Especially when embedded in healthcare delivery systems, many SW-CRTs may have subclusters nested in clusters, within which outcomes are collected longitudinally. Dr. Plourde will present sample size calculations for designing multilevel SW-CRTs that differentiate within and between-period correlations at each level of clustering.