Group 2: study elements captured in internal pilot and feasibility studies
| Study elements | Internal pilot study (n=80) | Internal feasibility study (n=12) |
| Assessed n (%) | Assessed n (%) | |
| Testing recruitment | 74 (92.5) | 12 (100.0) |
| Determining sample size and/or number available | 21 (26.3) | 4 (33.3) |
| Follow-up/dropout | 28 (35.0) | 5 (41.7) |
| Hypothesis testing | 0 | 0 |
| Resources | 3 (3.8) | 1 (8.3) |
| Randomisation | 27 (33.8) | 4 (33.3) |
| Blinding | 2 (2.5) | 0 |
| Outcome measures | 16 (20.0) | 2 (16.7) |
| Control group | 0 | 0 |
| Data collection | 21 (26.3) | 2 (16.7) |
| Clinical outcomes | 1 (1.3) | 0 |
| Dose/efficacy/safety | 5 (6.3) | 1 (8.3) |
| Acceptability | 21 (26.3) | 7 (58.3) |
| Feasibility | 35 (43.8) | 11 (91.7) |
| Suggests further study | 0 | 0 |
| Delivery of intervention | 7 (8.8) | 0 |
| Testing/developing materials | 7 (8.8) | 0 |