中文摘要：

目的了解天津市社区老年人轻度认知功能障碍（MCI）患病现状及其影响因素,为老年痴呆的早期发现、早期诊断和早期干预提供流行病学依据。方法采用随机整群抽样方法,对天津市南开区6个人口分布密集社区的2 978名≥65岁老年人进行问卷调查和MCI筛查。结果天津市社区老年人MCI患病率为11.38%;不同性别、年龄、文化程度、婚姻状况、家庭月收入、是否吸烟、喜欢呆在家里、常读书看报、常做家务、高血压、高血脂、糖尿病、抑郁症的老年人MCI患病率差异均有统计学意义（P〈0.01）,不同职业老年人MCI患病率差异无统计学意义（P〉0.05）;多因素非条件logistic回归分析结果表明,年龄〉70岁、女性、吸烟、喜欢呆在家里、高血压、高血脂和糖尿病是天津市社区老年人MCI患病的危险因素;文化程度小学及以上、在婚、家庭月收入≥500元、常读书看报和常做家务是天津市社区老年人MCI患病的保护因素。结论天津市社区老年人群MCI患病率较高;年龄、性别、文化程度、婚姻状况、家庭月收入、吸烟、喜欢呆在家里、常读书看报、常做家务、高血压、高血脂和糖尿病是天津市社区老年人MCI患病的主要影响因素。

英文摘要：

Objective To examine the prevalence and influencing factors of mild cognitive impairment（MCI） among aged people in the communities of Tianjin city,and to provide evidence for early diagnosis and intervention of the disease.Methods Totally 2 978 people over 65 years old from six communities in Tianjin were selected with cluster random sampling method and investigated on health status with a questionnaire survey and screened for MCI with Mini-Mental State Examination（MMSE）,Activity of Daily Living scale（ADL）,and Global Deterioration Scale（GDS） according to the standard of Diagnostic and Statistical Manual of Mental Disorders Ⅳ（DSM-Ⅳ）.Results The overall MCI prevalent rate was 11.38% among the elderly.The prevalence of MCI were significantly different among the elder persons of different age,gender,education level,marital status,monthly household income,smoking,whether living alone,reading newspaper and doing household duties frequently,and whether with diseases of hypertension,hyperlipemia,diabetes,or depressive disorder（P0.01 for all）.While the prevalence of MCI among the elderly had no significant relationship with occupation history of the elderly（P0.05）.Multiple logistic regression analyses showed that the aged,female,smoking,living alone,having hypertension,hyperlipemia,diabetes,or depressive disorder were risk factors for MCI,while high educational level,married,high monthly household income,reading newspaper,and doing household duties frequently were the protective factors of MCI.Conclusion This study confirms the high prevalence of MCI among the community elderly aged over 65 years in Tianjin city.Age,gender,education level,marital status,monthly household income,smoking,living alone,reading newspaper,doing household duties frequently,and having hypertension,hyperlipemia,diabetes,or depressive disorder are major influencing fators of MCI.