【摘要】 目的 调查老年痴呆及认知障碍的患病率及其与危险因素的关系。方法 对西北地区50个干休所18940人群中60岁以上3090名人员进行检测，使用《长谷川智力量表(HDS)》和《临床记忆量表》。结果 本组老年痴呆的患病率分别为痴呆期0.7%，痴呆前期1.7%，轻度异常21.4%，总患病率为23.8%。结论 老年痴呆及认知障碍患病率的高低可能与多种危险因素有关。强调重视痴呆前期及轻度异常患者的干预治疗。

    【关键词】 老年痴呆；认知障碍；患病率；流行病学

    The epidemiological survey of senile dementia and cognitive disorder in northwest area of China

    SONG Feng，LIU Ji-lin，ZHAO Zhi-hua，et al.

    Lanzhou General Hospital of Lanzhou Military Command，Lanzhou 730050，China

    【Abstract】 Objective To investigate the morbidity of senile dementia and related risk factors.Methods Study subjects were straitied clustering sample the 3090 over 60 year-old subjects are chosen among 18940 people of Northwest area.A neuropsychic examination is given to the subjects one by one by neuropsychic physician.The assessment was carried out by a two stage procedure twice：first ......