Table 3.
Intervention and assessment timeline
| Baseline survey |
Health4Life program + app | Post-intervention survey | 12-month F/U survey | Selective intervention (20%–30% students) |
24-month F/U survey | Selective intervention (20%–30% students) |
36-month F/U survey | |
| Intervention | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ |
| Control | ✓ | O | ✓ | ✓ | O | ✓ | O | ✓ |
| Time | Term 3 or 4, 2019 | Term 3 or 4, 2019 | Term 3 or 4, 2019 | Term 3 or 4, 2020 | Term 3 or 4, 2020 | Term 3 or 4, 2021 | Term 3 or 4, 2021 | Term 3 or 4, 2022 |
| Grade | Year 7 (12–13 years) |
Year 7 (12–13 years) |
Year 7 (12–13 years) |
Year 8 (13–14 years) |
Year 8 (13–14 years) |
Year 9 (14–15 years) |
Year 9 (14–15 years) |
Year 10 (15–16 years) |
F/U, follow-up.