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目的了解广东省沿海地区农村老年期痴呆的患病率及其与年龄、性别和教育的关系。方法在恩平县、阳东县和阳西县随机抽取１０３１例６５岁以上老年人，用病例筛查和病例确诊二阶段法进行调查。结果痴呆的患病率为５９９％，其中阿尔采木病（ＡＤ）和血管性痴呆的患病率分别为４７２％和０８８％；文盲组的痴呆患病率较高，痴呆和ＡＤ的患病率均随年龄增大则增高女性高于男性。结论广东省沿海农村老年期痴呆患病率较我国以往报道的患病率高，ＡＤ为主要类别，女性、高龄和低教育程序可能是痴呆的危险因素
Objective To understand the prevalence of dementia in the elderly in rural areas along the coast of Guangdong Province and its relationship with age, gender and education. Methods A total of 1031 elderly people over 65 years old were randomly selected in Enping, Yangdong, and Yangxi counties, and two-stage screening was used to investigate the cases. Results The prevalence of dementia was 5. 99%. The prevalence rates of Alzheimer’s disease (AD) and vascular dementia were 4.72% and 0.88% respectively. The illiteracy group had a higher prevalence of dementia. The prevalence of dementia and AD both increased with age and women were higher than men. Conclusion The prevalence of dementia in the elderly in coastal areas of Guangdong Province is higher than that reported in China. AD is the main category. Females, senior citizens and low educational programs may be risk factors for dementia.