Table 5

Reliability coefficients for Parent, Teacher and Self rated SDQ in a community sample of 3 – 17 year old Chinese children


Reliability Correlations – Cronbach's α

SDQ Scale
Parent (N = 1965)
Teacher (N = 1965)
Self (N = 690)

Total Difficulties Score
0.59
0.60
0.57
Emotional Symptoms
0.60 (0.67)*
0.63 (0.78)
0.59 (0.66)
Conduct Problems
0.48 (0.63)
0.63 (0.74)
0.33 (0.60)
Hyperactivity – Inattention
0.76 (0.77)
0.82 (0.88)
0.64 (0.67)
Peer Problems
0.30 (0.57)
0.48 (0.70)
0.30 (0.41)
Prosocial Behaviour
0.68 (0.65)
0.83 (0.84)
0.66 (0.66)

*Comparative data from Goodman, 2001 in brackets for comparison

Du et al. Child and Adolescent Psychiatry and Mental Health 2008 2:8   doi:10.1186/1753-2000-2-8