MPO and manic or hypomanic episode: Considering the total number of episodes during the 10‐year period, patients with DPO reported more depressive episodes than MPO patients (mean 4.2, S.D. = 3.9 episodes vs. 1.6, S.D. = 1.5, U = 149.0 p < .001, Cohen's d = 0.87) while a similar number of manic episodes were observed in both groups (MPO mean = 3.2, S.D. = 2.0 vs.