Table 2.

Primary outcome measures.

Outcome	Metrics
Acceptability	Self-developed 5-point Likert scale assessing the appropriateness and usefulness of the intervention’s content, length, usability, and service delivery model Postintervention semistructured interviews
Usability	System Usability Scale [51]
Feasibility	Recruitment: Number of participants screened per week Number of screening failures Number of participants enrolled per week Proportion of recruited participants opting to enroll Randomization: Proportion of eligible participants who access Anathema following randomization ‎Proportion of eligible participants who complete at least one module of Anathema Retention: Proportion of participants who complete T0 (baseline) measures Condition-specific completion rates following randomization (completion is defined as ≥50% of modules accessed at least once) ‎Proportion of participants initiating baseline measures who complete T1 (midtest) and T2 (posttest) measures Adherence: Proportion of participant dropouts from each intervention condition Proportion of participant withdrawals from the study Postintervention semistructured interviews