| Objective The major purposes of this study are to explore the levels of blood pressure, epidemiological distribution hypertension and their related inflenced factors, consequently providing scientific evidence for the determination of high risk population and surveillance population and making strategies for prevention and control hypertension that will be really fit for the research areas. Methods Multi-stage stratified randomized sampling was used in this study. Firstly, Zhongwei,Wuzhong, Longde,Guyuan, Haiyuan, Shizuishan, Yinchuan at city level were sampled in Ningxia Hui Autonomous Region according to development levels of society, economy and geographic setting. Secondly, one county and one city were selected from each of the five regions following random sampling principle. Thirdly one village and one town were randomly sampled in each samples above. At last, select a team form village,select a community from town, Investigate all residents aged over 60 year-old in households. All kinds of information were collected by interview, physical examination in sampled residents. The fifth population census data of Ningxia Hui Autonomous Region was used for standardizing rates. Comparison between the different rates of testing with Pearsonχ2,Linear by linearχ2 test,T test with measurement data,Spearman rank correlation analysis,analysis of variance. Single-factor and multi-factors Logistic regression analysis were used to explore risk factors of hypertension. Results 1,General epidemiological characteristics of hypertension:(1)The survey collected a total of 3431 people,actual survey 3044 people, response rate was 88.7%, 1617 mal(e53.1%), 1427 femal(e46.9%); the average age of male (70.1±7.7) years, the average age of female (70.2±8.4) years; investigates in the crowd the Han population to account for 63.4% ,the Hui people have 36.6% ; crowd ratio in the city is 52.2%, the village crowd ratio is 47.8%.(2) The mean of SBP and DBP was 140.39mmHg and 81.76mmHg respecitvely in the target population. Both means of SBP and DBP increased progressively with age,waist circumference and body mass index for men and women.(3) prevalence rate of hypertension in the elderly of Ningxia was 46.8%,The standardized prevalence rate was 47.2%,42.3% in men and 51.9% iu women (P<0.01), the prevalence rate of hypertension are increased pregressively with the growth of age; Urban prevalence rate of 49.3% higher than in rural 43.7%(P<0.01); hypertension was highly prevalent in Han population than that in Hui people(P<0.01. (4) The prevalence rate of isolated systolic hypertension were 21.8%, 21.1% in men and 22.6% in women (P>0.01), the prevalence rate of isolated systolic hypertension are increased pregressively with the growth of age.(5) The mean of BMI were 24.3±3.5kg/m2,men were 24.3±3.1kg/m2 and women were 24.3±3.8kg/m2(P>0.05); the obese rate is 14.0%, 10.2% in men and 18.1% in women(P<0.01).2,Related impact factor of hypertension: by multivariable logistic regression, age,high-salt diet,meat eat more times,BMI,smoking habits,obesity,family History and higher-educational background were risk factors,Hui population and heavy manual labour were protective factors of hypertension. 3,The prevention and cure condition of hypertension: the Percentages of awareness was 52.6%,the Percentages of take medication was 45.3%,the control Percentages of hypertension was 26.4%, the Percentages of awareness and the Percentages of take medication in women were higher than those in men(P<0.01), the control Percentages of hypertension was no distinction between men and women(P>0.05).4,The condition of complications: the prevalence of stroke was 5.7%, the prevalence of Coronary heart disease was 7.1%, the prevalence of diabetes mellitus was 4.4%, the prevalence of those three kinds of diseases were higher obviously in hypertension crowd than normal crowd of blood pressure(P<0.01). Conclusion 1,The mean of SBP and DBP was higher than the national level from 2005 for adults in Ningxia Hui Autonomous Region, The mean of SBP and DBP were highly prevalent in Han population than that in Hui popualtion.2,The prevalence of hypertension was lower than the nationwide level in 2002 for elderly population in Ningxia, the prevalence of hypertension in women was higher than that in men, the prevalence of hypertension in Han population was higher than that in Hui population.3,age,high-salt diet,meat eat more times,BMI,smoking habits,obesity,family History and higher - educational background were risk factors,Hui population and heavy manual labour were protective factors of hypertension.4,The prevalence of stroke and coronary heart disease , DM in hypertension group were higher than that in normal blood pressure group. |
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