An association between regional rates of bipolar diagnosis and suicide deaths in young males suggest that improved bipolar care for youth may reduce suicide mortality

This is from Swedish aggregated data from Socialstyrelsen. The case of bipolar disorder is particularly strong because we don’t expect to see much variation in the underlying construct, so regional differences can be attributed to health-care practices.

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References §

• Association of Bipolar Disorder Diagnosis With Suicide Mortality Rates in Adolescents in Sweden