The mean scores at the end of the @-week treatment period were lower for the ECT group than for the pharmacological treatment group : by @ points on the Montgomery-sberg Depression Rating Scale ( SE = @ , @ % CI = @-@ @ ) , by @ points on the @-item version of the Inventory of Depressive Symptomatology-Clinician-Rated ( SE = @ , @ % CI = @-@ @ ) , and by @ points on the Clinical Global Impression for Bipolar Disorder ( SE = @ , @ % CI = @-@ @ ) .