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目的对体重指数(BMI)标准和新建腰围界值点在参照人群中筛查超重、肥胖结果进行比较,验证后者的有效性。方法以两部分参照人群(沿海大城市和北方乡村)为目标人群,对象分别有27 256名和35 932名,7～22岁汉族大中小学生。同时使用BMI、腰围标准筛查超重、肥胖,分析筛查一致率。结果腰围界值点所筛超重、肥胖率显著高于BMI标准;两项标准的筛查结果不一致率很高,原因与腰围标准的超重、肥胖界值点设置偏低有关;界值的偏低程度肥胖大于超重,女大于男。超重/肥胖错判率北方乡村群体显著高于大城市,与前者较低的体格发育水平关联。结论腰围界值点应适度提高,减少错筛率。就提高腰围标准的准确性提出建议。
Objective To compare the validity of the BMI standard and the newly established cut-off point in screening the overweight and obesity in the reference population to verify the validity of the latter. Methods The target population consisted of two parts: the reference population (coastal big cities and northern villages), with 27 256 and 35 932 respectively, and middle and primary school students aged 7-22. At the same time using BMI, waist circumference screening standard overweight, obesity, analysis of screening consistency. Results The waist circumference thresholds were screened for overweight and obesity rates were significantly higher than the BMI standard; the two criteria for screening results inconsistent rate is high, due to waist circumference standards overweight, obesity threshold set point is low; borderline low Degree of obesity than overweight, female than male. Overweight / obesity misjudgment rates The northern rural population was significantly higher than that of the big cities and was associated with a lower level of physical development in the former. Conclusion waistline threshold should be moderately increased, reducing the wrong screen rate. Suggestions to improve the accuracy of waistline standards.