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按美国精神疾病诊断和统计手册修订第三版做临床诊断标准，对北京市东城区建国门街道江察片１０个居委会６０岁以上１２０７例老年人进行痴呆患病率调查。结果痴呆的患病率为６．１３％，其中ＡＤ型痴呆３．７０％，血管性痴呆２．４３％。患病率随年龄增大而增高。ＡＤ型痴呆女性高于男性；血管性痴呆则男性高于女性。女性高龄、低文化程度、低收入、就医困难及子女不孝敬可能是ＡＤ型痴呆的危险因素。
According to the revised third edition of the Diagnostic and Statistical Manual of Mental Diseases in the United States, the prevalence of dementia was investigated in 1207 elderly patients over 60 years of age in 10 neighborhood committees in Jiangcai, Jianguomen Street, Dongcheng District, Beijing. Results The prevalence of dementia was 6.13%, including 3.70% of AD dementia and 2.43% of vascular dementia. Prevalence increases with age. Dementia females were more likely than males to have AD; males were more likely than females to have vascular dementia. Women’s old age, low education, low income, difficulty in seeking medical treatment, and lack of respect for their children may be risk factors for AD dementia.