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体重指数和腰围的诊断性能,用于检测过度肥胖
John C Lin1, Clara E Tandar2, Simar S Bajaj3
1Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA.
Obesity (Silver Spring, Md.)
|February 22, 2026
概括
腰围的测量比身体质量指数 (BMI) 更灵敏地检测过多的脂肪,而BMI提供了更好的特异性. 纳入腰围 (WC) 可能会加强对肥胖的查.
科学领域:
- 肥胖研究的研究.
- 诊断准确性的研究研究.
- 公共卫生监督是对公共卫生的监督.
背景情况:
- 过度肥胖是与许多慢性疾病相关的重大公共卫生问题.
- 准确评估脂肪性对于早期检测和干预至关重要.
- 现有的查工具,如身体质量指数 (BMI) 和腰围 (WC) 有局限性.
研究的目的:
- 为了比较BMI,WC和兰塞特委员会 (LC) 评估过度脂肪的诊断标准的诊断性能.
- 评估不同脂肪度的敏感性,特异性和预测值.
- 确定最佳的方法来识别美国成年人多余脂肪,使用双能X射线吸收计 (DEXA) 作为参考标准.
主要方法:
- 利用了来自2011-2018年国家健康和营养检查调查 (NHANES) 的10,747名美国成年人 (20-59岁) 的数据.
- 评估诊断性能指标,包括灵敏度,特异性,正负预测值 (PPV,NPV) 和曲线下的面积 (AUC).
- 将BMI值,WC测量和LC标准与DEXA定义的过度脂肪性进行比较.
主要成果:
- 根据DEXA定义的脂肪过多的患病率为36.4%.
- 与BMI (74.6%) 相比,腰部测量显示出更高的灵敏度 (例如,NHLBI WC值为88.5%),但特异性较低.
- 柳叶刀委员会标准显示性能可变,≥2腰部测量达到88.5%的灵敏度和66.8%的特异性. AUC值有利于WC和腰与身高的比率.
结论:
- 与BMI相比,基于腰部的定义在检测多余脂肪方面具有更高的灵敏度.
- 体重指数 (BMI) 在识别多余脂肪方面提供了更高的特异性.
- 将WC整合到查方案中可能会改善过度肥胖个体的识别,补充现有的BMI评估.
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