94 patients meeting criteria for insomnia were randomly assigned into zopiclone group and alprazolam group,treated for 4 weeks.

对94症患者,随机分为佐匹克隆和普唑仑。疗程4周。

Subjects were randomly enrolled into three groups: risperidone group, combination of risperidone and benzhexol group and combination of risperdone and alprazolam group.

受试患者随机3：单用利培酮，利培酮+安坦，利培酮+普唑仑。