Depressive symptoms carry an increased risk for suicidal ideation and behavior in bipolar disorder without any additional contribution of mixed symptoms.
Fiedorowicz JG, Persons JE, Assari S, Ostacher MJ, Zandi P, Wang PW, Thase ME, Frye MA, Coryell W. Depressive symptoms carry an increased risk for suicidal ideation and behavior in bipolar disorder without any additional contribution of mixed symptoms. J Affect Disord. 2019 03 01; 246:775-782.