The Study on Body Mass Index and Blood Pressure of Children and Adolescents in Ningxia

Objective To study the relationship of body mass index(BMI) and blood pressure of children and adolescents in Ningxia.Methods The data of Ningxia 13039 Hui and Han students(between 7 to 18 years old) were collected,the 95th percentile of Chinese school age children' blood pressure was used to determine high blood pressure,then described the distribution of blood pressure among normal weight,overweight and obese students,and analyzed the associations between blood pressure,body mass index(BMI),gender and ethnicity.Results After adjusted the confounding factors,BMI was significantly correlated with DBP and SBP,the partial correlation coefficient were 0.122 and 0.125 respectively(P0.001).Five percent of students in Ningxia had HBP,especially the prevalence was higher among overweight and obese students than the normal weight students,the former was 12.71% and the later was 4.16%,the crude OR was 3.353.Conclusion For the children and adolescents,blood pressure was raising with the increasing of BMI,the overweight or obesity had three times danger than the normal weight to be hypertension,so we should prevent the hypertension from children.