Prevalence of self-reported depressive symptoms and associated social factors in mothers in Dunedin.

A large sample of women (n = 899) from Dunedin, New Zealand, completed a self-report questionnaire on depressive symptoms. On this basis, about 8 per cent of the sample were identified as having major depressive disorder. These women tended to have a history of previously reported psychological symptoms and formal treatment for depression. A significantly high proportion of the depressed group had been young at first pregnancy and had since been separated from their partners. The depressed women also reported more behaviour problems in their children, but these reports were not confirmed by teachers' reports or by the children's self-reports, suggesting a response bias in depressed women towards reporting problems.