Table 3. Prevalence of childhood behavior problems as measured by the SDQ.
| All children (n=8,900) | Male (n=4,710, 52.9%) | Female (n=4,190, 47.1%) | p-value for interaction male vs. female | ||||
|---|---|---|---|---|---|---|---|
| SDQ scores | Borderline | Abnormal | Borderline | Abnormal | Borderline | Abnormal | |
| Total SDQ scores | 1,279 (14.4) | 1,209 (13.6) | 729 (15.5) | 667 (14.2) | 550 (13.1) | 542 (12.9) | 0.001 |
| Emotional symptoms | 766 (8.6) | 804 (9.0) | 385 (8.2) | 365 (7.7) | 381 (9.1) | 439 (10.5) | <0.0001 |
| Conduct problems | 1,361 (15.3) | 1,237 (13.9) | 782 (16.6) | 691 (14.7) | 579 (13.8) | 546 (13.0) | <0.0001 |
| Hyperactivity problems | 1,148 (12.9) | 1,679 (18.9) | 645 (13.7) | 1,022 (21.7) | 503 (12.0) | 657 (15.7) | <0.0001 |
| Peer problems | 1,982 (22.3) | 2,273 (25.5) | 1,084 (23.0) | 1,305 (27.7) | 898 (21.4) | 968 (23.1) | <0.0001 |
| Pro-social behavior | 1,566 (17.6) | 1,440 (16.2) | 910 (19.3) | 895 (19.0) | 656 (15.7) | 545 (13.0) | <0.0001 |
Scale completed by parents or guardians. Data presented as n (%).
SDQ = Strengths and Difficulties Questionnaire.