【摘要】 目的比较体质量指数(BMI)、腰臀比(WHR)、体脂百分率(PBF)评价青少年人群肥胖的灵敏度,得出较为灵敏的评价方法。方法采用多阶段随机整群抽样,对重庆2 045名青少年进行相关指标的测定,并采用BMI、WHR、PBF评价青少年是否超体质量、肥胖。结果 3种方法的检出率相差较大,其中PBF的检出率最高(12.9%),其次为BMI(7.2%)、WHR(6.0%),且差异有统计学意义(P<0.05);一致性检验发现,3种方法两两之间一致性较差,其中Kappa(BMI与WHR)=0.199,Kappa(BMI与PBF)=0.441,Kappa(WHR与PBF)=0.187;采用综合评价作为金标准,分别与3种方法进行受试者工作特征曲线(ROC曲线)分析发现曲线下面积:PBF(0.954)>BMI(0.918)>WHR(0.694)。结论 PBF和BMI评价青少年肥胖的灵敏度较高,WHR灵敏度虽然较低,但对相关慢性疾病有很好的预测作用。更多还原

【Abstract】 Objective To compare the sensitivity of body mass index(BMI),waist-hip ratio(WHR)and percentage body fat(PBF)in the evaluation of the obese adolescents population,and find a more sensitive evaluation method.Methods In this study,2045 adolescents were recruited in the city of Chongqing by using multiple-stage random cluster sampling,and they were identified as overweight or obesity on the base of BMI,WHR and PBF.Results There was significant difference among the detection rate of the three methods(P<0.05),the detection rate of PBF was the highest(12.9%),then BMI(7.2%)and WHR(6.0%).consistency test showed that the concordance of three methods was poor and Kappa(BMI and WHR)=0.199,Kappa(BMI and PBF)=0.441,Kappa(WHR and PBF)=0.187;comprehensive evaluation was chosen as the gold standard and compared with three methods respectively by ROC curve,the analysis showed that area under curve(AVC):PBF(0.954)>BMI(0.918)>WHR(0.694).Conclusion The sensitivity of PBF and BMI was higher.Although the WHR sensitivity was lower,WHR is a good predictor associated for chronic diseases,which suggests that the development of appropriate adolescent WHR standard is necessary.更多还原