Men ( N = 40 ) and women ( N = 150 ) with a mean age of 41.6 years who had persistent insomnia in the presence of effective and stable treatment ( at least 2 weeks ) with fluoxetine ( < or = 40 mg/day ) , sertraline ( < or = 100 mg/day ) , or paroxetine ( < or = 40 mg/day ) for DSM-IV major depressive disorder , dysthymic disorder , or minor depressive disorder of mild-to-moderate severity ( and score of < or = 2 on item 3 of the Hamilton Rating Scale for Depression [ HAM-D ] ) participated in this randomized , double-blind , parallel-group study .
