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本文对南北方四市采取整群抽样方法进行心脑血管疾病的预报,并应用心脑血管疾病的预报值进行乘列表卡方检验,评价南北方四市患病频数,其结果表明,缺血性脑中风在南北患病频数有显著不同,其中北方(哈尔滨)的发病频数较高,而南方(长沙) 的发病频数较低,经卡方统计量证实南北方两地区的患病频数明显不同(P<0.01)。而冠心病南北方患病频数亦有不同,其北方(哈尔滨、乌鲁木齐)患病频数较高,而南方(长沙、杭州)则患病频数低,经卡方统计量证实两地区有显著差异(P<0.01)。可见,北方心脑血管的患病频数较南方为高。这与北方气候寒冷,温差较大,喜食动物脂肪食等易患因素有关。另外,从南北方四市冠心病组与缺血性脑中风组的胆固醇,血压,肥胖度,血粘度指数四项指标进行比较分析表明,北方(哈尔滨、乌鲁木齐)患冠心病组的血胆固醇,血粘度,收缩压均明显增高;患缺血性脑中风组的平均动脉压增高,具有统计学意义(P<0.05),其他各项指标均无显著差别。从而证明北方患病率高,与收缩压,胆固醇,血粘度增高有密切关系。
In this paper, cluster sampling is used to forecast cardiovascular and cerebrovascular diseases in the four cities in the north and south of China. Cardiovascular and cerebrovascular diseases are used to carry out chi-square test to predict the frequency of illness in the four cities of north and south. The results show that ischemia Stroke prevalence varied significantly between North and South, with a higher prevalence in the North (Harbin) and a lower incidence in the South (Changsha), which was confirmed by chi-square statistics to be significantly different (P <0.01). The prevalence of coronary heart disease in the north and the south is also different, the northern (Harbin, Urumqi) higher frequency of illness, while the South (Changsha, Hangzhou) prevalence frequency is low, the chi-square statistics confirmed significant differences between the two regions P <0.01). Can be seen that the frequency of cardiovascular disease in the North higher than the South. This is related to the cold climate in the north, the larger temperature difference and the risk factors for eating fatty foods such as animal fats. In addition, four indexes of cholesterol, blood pressure, degree of obesity and blood viscosity index in coronary heart disease group and ischemic stroke group in four cities of north and south China were compared and analyzed. The results showed that blood cholesterol in the coronary heart disease group in the north (Harbin, Urumchi) , Blood viscosity and systolic blood pressure were significantly increased; mean arterial pressure in ischemic stroke group was increased, with statistical significance (P <0.05), the other indicators were not significantly different. In order to prove the high prevalence in the north, and systolic blood pressure, cholesterol, blood viscosity are closely related.