论文部分内容阅读
目的分析青少年血压偏高与体质量指数的关系,为控制中学生体重减少血压偏高提供依据。方法分层整群随机抽取潍坊地区6所初中、高中学校13~18岁学生2 258名,采用倾向指数法均衡混杂因素,计算不同BMI分组间青少年的倾向指数,然后按倾向指数进行组间卡钳匹配,对匹配前后的数据进行t检验与秩和检验等。结果倾向指数法匹配前,协变量精神紧张、睡眠状况在正常与超重中学生间分布差异有统计学意义(Z值分别为-2.607,-1.989,P值均<0.05);倾向指数匹配后,所有协变量在正常组与超重组间分布差异均无统计学意义(P值均>0.05)。倾向指数匹配后BMI正常组与BMI异常(超重/肥胖)组间青少年血压状况分布差异有统计学意义(Z=-2.631,P<0.05)。结论控制青少年的体重可以减少血压偏高的罹患风险;倾向指数法可以有效控制组间偏倚,从而对分析结论做出正确评价。
Objective To analyze the relationship between the high blood pressure and body mass index in adolescents and provide basis for controlling high school students’ weight loss. Methods A total of 2,258 students aged 13-18 years from 6 middle and high schools in Weifang were randomly selected and stratified into groups. The propensity index was used to balance the confounders, and the interpersonal calipers were calculated according to the propensity index Match, before and after matching the data for t-test and rank sum test. Results Before the index matching, covariates stress and sleep status were significantly different between normal and overweight middle school students (Z = -2.607, -1.989, P <0.05 respectively). After the propensity index matched, all There was no significant difference in the distribution of covariates between normal group and overweight group (P> 0.05). There were significant differences in the distribution of blood pressure among adolescents with normal BMI and abnormal BMI (overweight / obesity) after propensity index matching (Z = -2.631, P <0.05). Conclusion Controlling the weight of adolescents can reduce the risk of high blood pressure. The propensity index method can effectively control the bias between groups and make a correct assessment of the conclusions of the analysis.