Division of Nutrition, Physical Activity, and Obesity, CDC, Atlanta, GA (DSF); the Division of Digestive Diseases and Nutrition, National Institutes of Diabetes, Digestive Diseases, and Kidney Disorders, NIH, Bethesda, MD (MH); and the Tulane Center for Cardiovascular Health, Tulane University School of Public Health and Tropical Medicine, New Orleans, LA (GSB).
Am J Clin Nutr. 2013 Dec;98(6):1417-24. doi: 10.3945/ajcn.113.065961. Epub 2013 Oct 23.
Although estimation of percentage body fat with the Slaughter skinfold-thickness equations (PBF(Slaughter)) is widely used, the accuracy of this method has not been well studied.
The objective was to determine the accuracy of the Slaughter skinfold-thickness equations.
We compared agreement between PBF(Slaughter) and estimations derived from dual-energy X-ray absorptiometry (PBF(DXA)) in 1169 children in the Pediatric Rosetta Body Composition Project and the relation to cardiovascular disease risk factors, as compared with body mass index (BMI), in 6725 children in the Bogalusa Heart Study.
PBF(Slaughter) was highly correlated (r = 0.90) with PBF(DXA), but it markedly overestimated levels of PBF(DXA) in children with large skinfold thicknesses. In the 65 boys with a sum of skinfold thicknesses (subscapular- plus triceps-skinfold thicknesses) ≥ 50 mm, PBF(Slaughter) overestimated PBF(DXA) by 12 percentage points. The comparable overestimation in girls with a high skinfold sum was 6 percentage points. We also found that, after adjustment for sex and age, BMI showed slightly stronger associations with lipid, lipoprotein, insulin, and blood pressure values than did PBF(Slaughter).
These results indicate that PBF(Slaughter), which was developed among a group of much thinner children and adolescents, is fairly accurate among nonobese children, but markedly overestimates the body fatness of children who have thick skinfold thicknesses. Furthermore, PBF(Slaughter) has no advantage over sex- and age-adjusted BMIs at identifying children who are at increased risk of cardiovascular disease based on lipid, lipoprotein, insulin, and blood pressure values.
尽管 Slaughter 皮褶厚度方程（PBF(Slaughter)）估计体脂百分比的方法被广泛应用，但该方法的准确性尚未得到很好的研究。
本研究旨在确定 Slaughter 皮褶厚度方程的准确性。
我们比较了 1169 名儿童的 PBF(Slaughter)与双能 X 射线吸收法（PBF(DXA)）的估计值之间的一致性，并与心血管疾病风险因素的关系，以及与 6725 名儿童的体质量指数（BMI）的关系，该研究来自儿科罗塞塔人体成分研究项目和博加卢萨心脏研究。
PBF(Slaughter)与 PBF(DXA)高度相关（r=0.90），但在皮褶厚度较大的儿童中，PBF(Slaughter)明显高估了 PBF(DXA)的水平。在 65 名皮褶厚度总和（肩胛下皮褶厚度+肱三头肌皮褶厚度）≥50mm 的男孩中，PBF(Slaughter)高估了 PBF(DXA) 12 个百分点。在皮褶厚度总和较高的女孩中，类似的高估程度为 6 个百分点。我们还发现，在调整性别和年龄后，BMI 与血脂、脂蛋白、胰岛素和血压值的相关性略强于 PBF(Slaughter)。
这些结果表明，PBF(Slaughter)是在一组更瘦的儿童和青少年中开发的，在非肥胖儿童中相当准确，但在皮褶厚度较厚的儿童中明显高估了体脂肪含量。此外，PBF(Slaughter)在基于血脂、脂蛋白、胰岛素和血压值识别心血管疾病风险增加的儿童方面，与性别和年龄调整的 BMI 相比没有优势。
