The 33-item Hypomania Checklist (HCL-33): A new self-completed screening instrument for bipolar disorder

Bipolar disorder (BD) is often misdiagnosed as major depressive disorder (MDD). This study tested the psychometric properties and the accuracy of the Chinese version of the 33-item Hypomania Checklist (HCL-33) to identify BD in Chinese clinical settings.A total of 350 depressed patients were consecutively interviewed in a major psychiatric hospital in China. The patients' socio-demographic and clinical characteristics were recorded using...