| Headache severity |  | ||
---|---|---|---|---|
Mild | Moderate | Severe | Â | |
Age (years) | p | |||
Male | ||||
 10–11 (n = 207) | 39.4 (31.9, 47.4) | 37.1 (30.2, 44.6) | 23.5 (18.2, 29.9) | 0.077 |
 12–13 (n = 205) | 44.4 (37.4, 51.7) | 38.8 (31.9, 46.2) | 16.8 (11.8, 23.3) | |
 14–15 (n = 71) | 25.8 (15.4, 39.8) | 47.4 (34.6, 60.5) | 26.9 (17.8, 38.3) | |
 16–17 (n = 94) | 51.0 (38.7, 63.1) | 30.2 (20.7, 41.8) | 18.8 (10.4, 31.6) | |
Female | Â | |||
 10–11 (n = 218) | 51.9 (44.4, 59.4) | 36.4 (29.5, 43.9) | 11.7 (7.9, 17.0) | < 0.001 |
 12–13 (n = 246) | 54.1 (46.5, 61.5) | 34.6 (28.4, 41.4) | 11.3 (7.6, 16.5) | |
 14–15 (n = 141) | 25.9 (18.6, 34.9) | 51.2 (42.0, 60.3) | 22.9 (16.1, 31.5) | |
 16–17 (n = 191) | 40.5 (33.0, 48.5) | 41.7 (33.9, 49.9) | 17.8 (12.1, 25.3) |