TABLE 2.
Summary of feasibility outcome measures and thresholds.
Feasibility construct | Outcome | Pre‐determined threshold | Result | Achieved? |
---|---|---|---|---|
Demand | Recruitment rate | 3 participants per month | 5.2 | Yes |
Conversion rate | ≥75% | 100% | Yes | |
Acceptability | CEQ | ≥75% scored ≥50% for credibility and expectancy | 92% | Yes |
Adherence | REDCap survey every 4 weeks | ≥75% used their intervention ≥5 h per day | 92% | Yes |
Adverse events | REDCap survey every 4 weeks | <15% and none are considered serious | 65% | Partially a |
Retention | Proportion of participants followed up at 12 weeks | ≥80% | 100% | Yes |
Although 65% reported an adverse event, none were considered serious.
Abbreviations: CEQ, Credibility/Expectancy Questionnaire.