Year: 2007 Source: British Journal of Psychiatry, v.191, no.4, (October 2007), p.335-342 SIEC No: 20080926

The associations between the frequency of major depression at ages 16-21 & later outcomes were examined. Data were gathered from a 25-year longitudinal study of a birth cohort of 982 New Zealand children. There were significant associations between the frequency of depression at ages 16-21 years & all outcome measures, including suicide ideation & attempts. Suicide ideation was reported by 8.3% of subjects with no depressive episodes, 17.4% of subjects with 1-4 episodes, 12.5% of subjects with 5-9 episodes, & 32.4% who reported 10 or more episodes. Rates of suicide attempt increased with an increasing number of depressive episodes. Relationships between frequency of depression & outcomes remained significant even after adjusting for confounding factors. (30 refs.)