贵阳市城区老年痴呆患病率调查

目的了解贵阳市城区老年痴呆的患病率及其流行特征。方法采用多级整群抽样方法。随机抽取贵阳市城区26个社区居委会的60岁及以上老年人群作为样本人群，采用二阶段调查方式进行研究。调查60岁及以上老年人3229名。资料比较用Y0检验或计算比值比（OR）。结果共发现痴呆患者64例，其中AD患者41例（占64．06％），VD患者18例（占28．13％），混合性痴呆2例（占3．13％），其他类型痴呆3例（占4．68％）。60岁以上人群痴呆及AD、VD的患病率分别为1．98％，1．27％和0．56％。痴呆、DA和VD的患病率随年龄的增加而显著增高，在男性和女性之间差异无统计学意义；随受教育程度的增高而显著降低；体力劳动者AD患病率显著高于脑力劳动者。丧偶者痴呆、AD的患病明显高于在婚者。结论贵阳市城区痴呆患病率水平接近全国城市人群平均水平。AD是痴呆患病的主要类型，高龄、低教育程度、丧偶的老年人群是痴呆患病的高危人群。

Investigation on prevalence of dementia among elderly in urban communities of Guiyang city

Objective To study the prevelence and distribution of dementia among the elderly in urban communities of Guiyang city.Methods Using multistage sampling,the data were collected to 3229 old people aged 60 years and over among 26 communities of Guiyang.All participants were interviewed and screened with Mini-mental State Examination(MMSE).Dementia was diagnosed by using DSM-IV.The diagnosis of Alzheimer's disease(AD)and vascular dementia(VD)used NINCDS-ADRDA and NINDS-AIREN criteria,respectively.Chi-square test and odds ration(OR)were used to data analysis.Results Totally 64 cases of dementia were identified,41 were AD(64.06%),18 were VD(28.13%),2 were mixed dementia(3.13%),and 3 were other kinds of dementia(4.68%).The prevalence of dementia,AD and VD among old people aged 60 and over were 1.98%,1.27% and 0.56%,respectively.The rates of dementia,AD and VD were usually along with the increasing age.There was no statistically significance for the prevalence between men and women.Tere was a decreasing tendency for dementia and AD with the increasing years of schooling.The manual workers had a higher prevalence of AD than mental workers.The widowed people had higher prevalence of dementia and AD than those of living with spouse.Conclusion The prevalence rate of AD in Guiyang was similar to urban average rate in our country.AD was the main type of dementia.Aging,low education and widowed old people were associated with dementia.