7 - 9 years | 10 - 12 years | 13 - 15 years | ≥15 years | Total | |
n/N (%) | n/N (%) | n/N (%) | n/N (%) | n/N (%) | |
D1 | 1/136 (0.7) | 3/215 (14.0) | 2/107 (1.9) | 1/6 (16.7) | 7/464 (1.5) |
D2 | 6/142 (4.2) | 29/325 (8.9) | 15/118 (12.7) | 1/8 (12.5) | 51/593 (8.6) |
D3 | 5/183 (2.7) | 18/307 (5.9) | 10/95 (10.5) | 0/7 (0.0) | 33/592 (5.6) |
D4 | 4/160 (2.5) | 15/310 (4.8) | 9/125 (7.2) | 0/1 (0.0) | 28/596 (4.7) |
D5 | 5/204 (2.5) | 19/350 (5.4) | 3/141 (2.1) | 2/4 (5.0) | 29/699 (4.1) |
Total | 21/825 (2.5) | 84/1507 (5.6) | 39/586 (6.7) | 4/26 (15.4) | 148/2944 (5.0) |