Prevalence, risk factors and prognosis of depressive disorders.

In Finland, one out of ten adults had a depressive disorder on 2011, and compared to year 2000, the prevalence increased especially in women. Risk factors for recurrent depressive episodes included female gender, young age, childhood adversities, and prior mild depressive symptoms. During follow-up, 75% of patients recovered, and the risk for prolonged depression was increased in those living alone or with severe symptoms. Depressive disorders are associated with a two-fold risk of death, which can only partly be explained by physical illness and negative health behavior.