Proportion of participants that progressed within each follow-up period by age groups and gender (n=264)
| Wave 1-Wave 2 n (%) | Wave 2-Wave 3 n (%) | Wave 3-Wave 4 n (%) | Wave 4-Wave 5 n (%) | Total n (%) | |
| Age groups in years | |||||
| 12–13 (n=47) | 5 (10.6) | 19 (40.4) | 4 (8.5) | 5 (10.6) | 33 (70.2) |
| 14–15 (n=164) | 22 (13.4) | 21 (12.8) | 13 (7.9) | 7 (4.3) | 63 (38.4) |
| ≥16 (n=53) | 3 (5.7) | 4 (7.5) | 2 (3.8) | 0 (0) | 9 (16.9) |
| Gender | |||||
| Male (n=131) | 12 (9.2) | 23 (17.6) | 9 (6.9) | 10 (7.6) | 54 (41.2) |
| Female (n=133) | 18 (13.5) | 21 (15.8) | 10 (7.5) | 2 (1.5) | 51 (38.3) |