| SDQ subscale | Sample | Close to average | Slightly raised | High | Very high | ||||
| (n) | % | (n) | % | (n) | % | (n) | % | (n) | |
| Emotional Symptoms | 27 473 | 75.2 | (20 659) | 9.4 | (2574) | 6.5 | (1778) | 9.0 | (2462) |
| Peer Relationship Problems | 27 474 | 66.9 | (18 368) | 14.4 | (3950) | 8.9 | (2445) | 9.9 | (2711) |
| Conduct Problems | 27 474 | 83.2 | (22 870) | 7.7 | (2125) | 4.6 | (1258) | 4.4 | (1221) |
| Hyperactivity-Inattention | 27 472 | 78.0 | (21 416) | 9.5 | (2613) | 6.2 | (1713) | 6.3 | (1730) |
| Prosocial Behaviour* | 27 474 | 90.7 | (24 908) | 5.6 | (1543) | 2.3 | (633) | 1.4 | (390) |
| Total difficulties | 27 472 | 75.8 | (20 815) | 10.6 | (2923) | 5.0 | (1385) | 8.6 | (2349) |
*For the Prosocial Behaviour subscale, the four-level classification labels are instead ‘close to average’, ‘slightly lowered’, ‘low’ and ‘very low’.