Acceptability
The primary measure of acceptability was whether participants would recommend OPTIMiSE to others (measured as the percentage of participants who selected agree or strongly agree to this question on the postcourse evaluation). Acceptability was also assessed by reviewing participants’ suggestions for improvements, which were gathered as part of the postcourse evaluation survey. In addition, all participants who elected to withdraw from the study were invited to complete a short web-based survey regarding their reasons for withdrawing. Responses to this survey further informed our assessment of the program’s acceptability.