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

对94例患者,随分为佐匹克隆组和普唑仑组。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3组：单用利培酮组，利培酮+安坦组，利培酮+普唑仑组。