{"title":"[Self-report of body silhouettes to discriminate high abdominal adiposity in adolescents].","authors":"Evelyn Yazmin Estrada-Nava, Marcela Veytia-López, Marcela Pérez-Rodríguez, Rosalinda Guadarrama-Guadarrama","doi":"10.5281/zenodo.14616936","DOIUrl":null,"url":null,"abstract":"<p><strong>Background: </strong>Obtaining abdominal adiposity through self-reporting of body silhouettes could be a tool in long-distance epidemiological studies.</p><p><strong>Objective: </strong>To determine the cut-off point of body silhouettes and evaluate their diagnostic certainty in the classification of abdominal adiposity in Mexican adolescents.</p><p><strong>Material and methods: </strong>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.</p><p><strong>Results: </strong>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.</p><p><strong>Conclusions: </strong>Self-reported BS are a tool with high certainty that can be used to discriminate abdominal adiposity in adolescents.</p>","PeriodicalId":94200,"journal":{"name":"Revista medica del Instituto Mexicano del Seguro Social","volume":"63 2","pages":"e6426"},"PeriodicalIF":0.0000,"publicationDate":"2025-03-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12040390/pdf/","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Revista medica del Instituto Mexicano del Seguro Social","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.5281/zenodo.14616936","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 0
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.