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Table 2 Means and standard deviations (SD) of the Strengths and Difficulties Questionnaire (SDQ) scales

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
  1. aP < 0.05 for gender differences; bP < 0.05 for age differences; csignificant gender/age interaction.