儿童血压影响因素的偏相关分析

Partial correlation analysis of the influencing factors of blood pressure in children

目的探讨人体测量指标与儿童血压之间的相关关系以及各因素对血压影响的直接作用和间接作用。方法以整群抽样的方法,随机抽取城区全日制小学三四年级学生1546人,进行体格检查和问卷调查,以资料完整的1508人作为研究对象,用固定年龄等有关因素的偏相关分析法,分析儿童血压与人体测量指标之间的相关关系。结果儿童收缩压与性别、年龄、身高、体质量、胸围的Pearson相关系数分别是0.078,0.166,0.337,0.313,0.304(P<0.01);儿童舒张压与性别、年龄、身高、体质量、胸围的Pearson相关系数分别是0.047,0.120,0.268,0.271,0.251(P<0.01);控制人体测量指标之间的相互影响后,收缩压、舒张压只与身高和胸围呈相关关系(P<0.01),与年龄、性别、体质量无相关关系(P>0.05)。结论儿童的收缩压、舒张压与儿童的身高、胸围之间存在正相关关系,在同年龄、同性别儿童中区分儿童正常血压、临界血压或高血压时,应考虑身高和胸围对血压的影响影响。

AIM:To investigate the relation between anthropometrical parameters and blood pressure in children,and to determine the direct and indirect effect of the influencing factors on blood pressure.METHODS:Totally 1 546 pupils,Grade 3-4,were selected with the cluster sampling method from a primary school,they received physical examination and investigated with questionnaires,then 1 508 of them with complete data were taken as the subjects.The relation of anthropometric parameters with blood pressure was analyzed by using partial canonical correlation analysis including age and other related factors.RESULTS:The Pearson correlation coefficients of systolic pressure(SP) in children with their sex,age,body height,body mass and chest circumference were 0.078,0.166,0.337,0.313 and 0.304,respectively(P< 0.01),and those of diastolic pressure(DP) were 0.047,0.120,0.268,0.271 and 0.251,respectively(P< 0.01).SP and DP were positively correlated only with body height and chest circumference after the interaction between the anthropometric parameters was controlled(P< 0.01),but not significantly correlated with age,sex and body mass(P >0.05).CONCLUSION:There are positive relations of SP and DP with body height and chest circumference in children.The effect of body height and chest circumference should be taken into consideration when distinguishing normal,critical blood pressure or hypertension among the children with the same age and sex.