Methods: Mind the Gap Webinar Series

Group-based interventions may be evaluated in a parallel group- or cluster-randomized trial, in an individually randomized group-treatment trial, or in a stepped-wedge group- or cluster-randomized trial. These designs have additional design and analytic challenges beyond those presented when an individual-based intervention is evaluated using a traditional randomized clinical trial. This webinar will review those challenges as well as current recommendations for design and analysis of these trials. In addition, the webinar will review updates to the Research Methods Resources website which currently focuses on parallel group- or cluster-randomized trials and individually randomized group-treatment trials. In particular, we will demonstrate the new sample size calculator for individually randomized group-treatment trials, which was added to the website in April 2021. We will also preview a new section on stepped-wedge group- or cluster-randomized trials which will be coming to the website later this year.