“…Previous studies have reported the efficacy of ECT for depression in dementia [ 45, 51–57 ], but the number of studies is not large. Furthermore, most are case reports [ 52, 55–57 ], or most studies focused on relatively mild dementia, compared to this study [ 45, 51, 53 ]. Further studies should be needed to clarify the efficacy for depression in moderate or severe dementia.…”