The correlation between body mass index and percentage body fat in people of different gender and nationality and their application assessment / 国际检验医学杂志

ABSTRACT

Objective To analyze the correlation between body mass index(BMI)and percentage body fat(PBF)in people of dif-ferent nationality and gender,and assess the value of BMI and PBF in the diagnosis of obesity.Methods A total of 925 healthy a-dults who underwent physical examination in the hospital were enrolled in the study,bioelectrical impedance measurement was used to measure the weight,PBF,then analyze the correlation between BMI and PBF in people of different nationality and gender.Results In the normal and overweight population classified by BMI,;In underweight,overweight and obesity people,PBF of Han women were higher than that of Uighur women(P <0.05 ).In people of different gender and ethnic group,PBF was positively correlated with BMI(P <0.05).Using BMI≥28 kg/m2 as gold standard for the diagnosis of obesity,PBF have good sensitivity and low speci-ficity for the diagnosis of obesity in both of the two ethnic groups.Conclusion Compared with Uygur,Han have higher PBF at the same level of BMI.There is a malconformation between BMI and PBF.Evaluation of obesity could not simply rely on BMI,and should be analyzed combined with PBF.