Table 3 Description of feasibility indicators, parameters for success, results, and suggested modifications
Feasibility indicator | Outcome measure | Parameter for success | Results | Feasible | Suggested modifications |
|---|---|---|---|---|---|
Process (n = 4) | |||||
Recruitment rate | # of subjects recruited/time | 2 subjects/month/site | 1 subject/m/site | N | Consider other recruitment strategies |
Consent rate | % of subjects consenting | >20% acceptance | 49% acceptance | Y | |
Retention rate | % of subjects with complete data collection (T2, T3) | Complete T2 and T3 with ≥80% of subjects | T2 = 95% T3 = 87.5% | Y | |
Perceived benefit | Post-intervention participant questionnaire | >85% will perceive benefit of WheelSeeU | 100% | Y | |
Resources (n = 4) | |||||
Participant adherence | |||||
WheelSeeU group | Complete 6 WheelSeeU sessions | >85% of subjects | 95% | Y | |
Control group | Complete 6 iWheel sessions | >85% of subjects | 90% | Y | |
Trainer adherence | |||||
Peer-trainer | Recruit/retain peer-trainers | Attend 6 × 5 sessions | 98% | Y | |
Support-trainer | Recruit /retain support-trainers | Attend 6 × 5 sessions | 98% | Y | |
Data collection burden | |||||
T1 | Data collection time T1 | >85% of subjects complete in ≤2 h | 141 (36) min | N | Reduce the number of outcome measures collected |
T2 | Data collection time T1 | >85% of subjects complete in ≤ 1.5 h | 119 (43) min | N | Relax parameter for success |
T3 | Data collection time T1 | >85% of subjects complete in ≤1.5 h | 118 (56) min | N | |
Translations | Translate and administer study materials in English and French | No issues | 0 issues | Y | |
Management (n = 4) | |||||
Processing time | Time between initial subject contact to enrolment | Mean time is <10 days | N | Relax parameter for success | |
Combining data | Successfully combine data in English and French | No issues | 0 issues | Y | |
Study protocol administration | Study protocol checklist | Modifications can be made with minimal changes to protocol | Minimal change | Y | Allow for individual training if one subject drops out |
Intervention fidelity | Observe and score peer-trainer and expert trainer administer the intervention | >90% on WheelSeeU Administrator Rating Form | 90% | Y | |
Safety (n = 1) | |||||
Intervention | # of adverse events | No adverse events | 0 adverse events | Y | |
Data collection | # of adverse events | No adverse events | 0 adverse events | Y | |