[Self-report of body silhouettes to discriminate high abdominal adiposity in adolescents].

Evelyn Yazmin Estrada-Nava, Marcela Veytia-López, Marcela Pérez-Rodríguez, Rosalinda Guadarrama-Guadarrama
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Abstract

Background: Obtaining abdominal adiposity through self-reporting of body silhouettes could be a tool in long-distance epidemiological studies.

Objective: To determine the cut-off point of body silhouettes and evaluate their diagnostic certainty in the classification of abdominal adiposity in Mexican adolescents.

Material and methods: An analytical cross-sectional study was carried out on adolescents aged 14 to 18, high school students in the State of Mexico. The participants signed the informed consent, a body silhouette (BS) scheme was applied and their waist circumference (WC) was measured at the abdominal midpoint. Descriptive analyzes were performed, the best cut-off point was determined using ROC curves and the Youden index, and the diagnostic performance of BS to identify abdominal adiposity was evaluated.

Results: 513 students were included (57% female; median age 16 [IQR 15-17] years). BS 6 was found to be the best cut-off point for both women (Youden = 0.68) and men (Youden = 0.69). The sensitivity was 91% in women and 79% in men, the specificity was 77% in women and 89% in men, with a positive likelihood ratio of 3.92 (95%CI = 3.77, 4.08) for women and 7.08 ( 95%CI = 4.55, 11.0) for men.

Conclusions: Self-reported BS are a tool with high certainty that can be used to discriminate abdominal adiposity in adolescents.

[自我报告的身体轮廓,以区分高腹部肥胖的青少年]。
背景:通过身体轮廓的自我报告获得腹部脂肪可能是远距离流行病学研究的一种工具。目的:确定身体轮廓的分界点并评价其在墨西哥青少年腹部肥胖分类中的诊断准确性。材料和方法:对墨西哥州14至18岁的高中生进行了一项分析性横断面研究。参与者签署知情同意书,采用身体轮廓(BS)方案,并在腹部中点测量腰围(WC)。进行描述性分析,利用ROC曲线和约登指数确定最佳分界点,评价BS对腹部肥胖的诊断效能。结果:共纳入513名学生(57%为女性;中位年龄16岁[IQR 15-17]岁)。bs6被发现是女性(约登= 0.68)和男性(约登= 0.69)的最佳分界点。女性的敏感性为91%,男性为79%,特异性为77%,男性为89%,女性的阳性似然比为3.92 (95%CI = 3.77, 4.08),男性为7.08 (95%CI = 4.55, 11.0)。结论:自我报告的BS是一种高确定性的工具,可用于区分青少年腹部肥胖。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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