2.8.1. Sample Size Considerations
The primary aim of this study was to examine acceptability and feasibility of the intervention, rather than to formally test the intervention’s efficacy. Accordingly, the choice of sample size was selected primarily to allow for testing and refinement of protocols and procedures (Aim 1), informal examination of between-arm differences in patterns of change (Aim 2), and estimation of variability in outcomes to be used in planning a subsequent fully powered efficacy trial. We selected our sample size (N = 60 total participants; n = 30 allocated to each arm) that, based on our previous work [