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disorders, bipolar disorder and major depression\n* Has a history of drug or alcohol abuse in the 5 years prior to start of study or has alcoholic disease such as alcoholic liver disease or gastritis alcoholic\n* Has a history of narcolepsy or cataplexy\n* Has used hypnotics, antipsychotics, mood stabilizers, antidepressants, anxiolytics, psychostimulants, anticonvulsants or tiapride within 2 weeks prior to randomization\n* Has delirium as assessed by DSM-5 or DRS-R-98 (total score ≥14.5) before the first dose of study medication",false,"ALL","65 Years","90 Years",{"count":452,"type":453},207,"ACTUAL","INTERVENTIONAL",[456],"PHASE3","The goal of this study is to evaluate the efficacy and safety of suvorexant (MK-4305) for reducing the incidence of delirium in Japanese participants who are at high risk of delirium. The primary hypothesis is that suvorexant reduces the proportion of participants with delirium compared with placebo as assessed by the Diagnostic and Statistical Manual of Mental Disorders, 5th Edition (DSM-5) criteria.",[459],"Delirium","COMPLETED","2024-11-06",{"date":463,"type":453},"2024-11-25",{"date":465,"type":453},"2020-10-22",{"date":467,"type":453},"2022-12-23",{"name":5,"class":6},50]