From: The factor structure of the Strengths and Difficulties Questionnaire (SDQ) in Greek adolescents
 |  | 11 to 14 years | 15 to 17 years | ||
---|---|---|---|---|---|
 | Total | Male | Female | Male | Female |
Prosocial behavioura | 8.1 ± 1.8 | 7.9 ± 2.0 | 8.4 ± 1.6 | 7.5 ± 2.1 | 8.2 ± 1.8 |
Hyperactivityb | 3.6 ± 2.2 | 3.1 ± 2.2 | 3.1 ± 2.1 | 3.9 ± 2.2 | 4.1 ± 2.2 |
Emotional symptomsabc | 3.0 ± 2.1 | 2.3 ± 2.2 | 3.1 ± 2.0 | 2.5 ± 2.0 | 3.7 ± 2.1 |
Conduct problemsb | 2.0 ± 1.5 | 3.0 ± 1.7 | 2.8 ± 1.4 | 3.0 ± 1.5 | 3.1 ± 1.5 |
Peer problems | 1.8 ± 1.7 | 1.9 ± 2.0 | 1.7 ± 1.6 | 1.9 ± 1.8 | 2.0 ± 1.6 |