Distribution of Blood Pressure in 7 936 Children and Adolescents in Guiyang and Analysis of the Associated Factors

Objective To investigate the distribution of blood pressure and incidence of hypertension in children and adolescents from the urban area of Guiyang city aged 8-17 years old,in order to provide scientific evidence for preventing hypertension.Methods Seven thousand nine hundred and sixty-three primary and secondary students were sampled and standardized in blood pressure,height and weight.In accordance with the Working Group on Obesity in China(WGOC)recommendations,the subjects were divided into overweight,obesity and normal weight group,then the relationship between blood pressure and body mass index(BMI)and the prevalence of hypertension in different BMI groups were analyzed.Results 1.Compared with the USA and Shanghai city,the distribution of blood pressure in children and adolescents from the urban area of Guiyang city were different(Pa0.05).2.Linear correlation analysis showed that BMI was significantly positively correlated with systolic blood pressure(SBP)and diastolic blood pressure(DBP)(r=0.520,0.365,Pa0.01).3.The partial correlation analysis controlling for age,sex and height also showed that BMI was significantly positively correlated with SBP and DBP(r=0.390,0.210,Pa0.01).4.The prevalence of hypertension in different BMI groups were 24.49%,10.76%,2.65%,respectively,there were significant differences among the 3 groups(χ2=555.965,P0.01).Conclusions Consider the effect of so many factors,the percentile of blood pressure in children and adolescents from different countries and regions have different distribution.Overweight and obesity were the crucial factors of the children's hypertension,the blood pressure and BMI in this study are closely related.It is very important that we should be pay more attention to intervene the behavior of overweight,obesity children and adolescents in order to reduce the incidence of cardiovascular disease.