Moraes Milena Miranda de, Veiga Gloria Valeria da
Instituto de Nutrição Josué de Castro, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brasil.
Arq Bras Endocrinol Metabol. 2014 Jun;58(4):341-51. doi: 10.1590/0004-2730000002865.
To evaluate the performance of percent body fat (%BF) and waist circumference (WC) in predicting metabolic abnormalities indicating cardiovascular risk in adolescents.
Cross-sectional study with a probabilistic sample of 573 adolescents aged 12 to 19 years from state public schools in Niterói, RJ. The Receiver Operating Characteristic Curve was used to evaluate the accuracy of WC and %BF in predicting alterations in blood pressure, lipid profile, and blood glucose.
The best %BF cutoff points were 21% for boys, and 23% for girls, with sensitivity (SE) and specificity (SP) of approximately 60%. The best WC cutoff points were 71 cm for boys, and 66 cm for girls (SE: 55% to 70%; SP: 55% to 78%).
Even the best cutoff points misidentified high proportions of adolescents with metabolic abnormalities. Caution is recommended in the use of these indicators for cardiovascular risk screening in this age group.
评估体脂百分比（%BF）和腰围（WC）在预测青少年心血管风险相关代谢异常方面的表现。
对来自里约热内卢州尼特罗伊市公立学校的573名12至19岁青少年进行概率抽样的横断面研究。采用受试者工作特征曲线评估WC和%BF在预测血压、血脂谱和血糖变化方面的准确性。
男孩的最佳%BF切点为21%，女孩为23%，敏感性（SE）和特异性（SP）约为60%。男孩的最佳WC切点为71厘米，女孩为66厘米（SE：55%至70%；SP：55%至78%）。
即使是最佳切点也会误判高比例的代谢异常青少年。建议在该年龄组使用这些指标进行心血管风险筛查时谨慎行事。
