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目的 阐明北京地区7～15岁儿童青少年体重指数(或体质指数,BMI)与血压的关系,并为中国肥胖问题工作组(WGOC)提出的中国儿童青少年超重、肥胖分类标准是否能够敏感区分正常体重、超重和肥胖组的血压值提供交叉验证的依据。方法 2000年4～5月,采用分层整群随机抽样对北京地区5155名6～15岁儿童青少年进行肥胖流行特点及其危险因素的横断面调查。按照WGOC推荐的中国儿童青少年超重、肥胖分类标准建议,以及美国疾病预防控制中心推荐的儿童高血压标准诊断儿童高血压,采用Person相关分析、t检验、X~2检验和logistic多因素回归分析等统计学方法,分析了其中7～15岁4982名研究对象的资料。结果(1)在控制了年龄、性别的影响后,7～15岁儿童青少年的BMI与收缩压(SBP)、舒张压(DBP)独立正相关[偏相关系数(r)检验P<0.0001,BMI与SBP、DBP的偏r分别为0.323 87和0.245 88;(2)SBP值、DBP值都是肥胖组>超重组>正常体重组,差异有显著性(P<0.001);(3)正常体重、超重、肥胖组间高SBP率、高DBP率、高血压患病率差异有显著性(均为P值<0.0001),与正常体重组相比,超重、肥胖组患高血压的相对危险度(RR)分别为2.96和4.85。超重组和肥胖组的高血压患病率分别高达19.70％和24.22％。(4)logistic多因素回归分析结果提示,年龄和体重对SB
Objective To clarify the relationship between body mass index (BMI) and blood pressure of children and adolescents aged 7-15 years in Beijing and to identify whether Chinese children and adolescents with overweight or obesity classification criteria proposed by China Working Group on Obesity (WGOC) can distinguish sensitively from normal body weight , Blood pressure values in overweight and obesity groups provide the basis for cross-validation. Methods From April to May 2000, stratified cluster random sampling was used to investigate the prevalence and risk factors of obesity in 5155 adolescents aged 6-15 years in Beijing. According to the recommendation of WGOC for overweight and obesity classification of children and adolescents in China and the pediatric hypertension criteria recommended by CDC, the correlation between Person and Childhood Hypertension was analyzed by Person Correlation Analysis, t test, X ~ 2 test and logistic multivariate regression analysis Statistical methods were used to analyze the data of 4982 subjects aged 7-15 years. Results (1) BMI was independently and positively correlated with systolic blood pressure (SBP) and diastolic blood pressure (DBP) in children aged 7 ~ 15 years after controlling for age and sex [partial correlation coefficient (r) test, P <0.0001, And SBP, the partial r of DBP were 0.323 87 and 0.245 88, respectively; (2) SBP and DBP were all significant in obesity group> overweight group> normal weight group (P <0.001); (3) (P <0.0001). Compared with normal weight group, the relative risk of hypertension in overweight and obesity group was significantly higher than that in normal weight group (RR) were 2.96 and 4.85 respectively. The prevalence rates of hypertension in overweight and obesity groups were as high as 19.70% and 24.22% respectively. (4) The results of logistic multivariate regression analysis indicated that age and weight of SB