Abstract
Purpose
The purpose of this study was to determine the cut-off values of triglycerides and glucose (TyG) index as one of the indirect indices for metabolic syndrome (MetS) in a pediatric population.
Methods
This national study was conducted in 2015 on 14400 students, aged 7–18 years. They were selected by random cluster sampling from 30 provinces of our country during the fifth survey of a national school-based surveillance program. MetS was defined based on the Adult Treatment Panel III (ATP III) criteria modified for the pediatric age group. The cut-off values of TyG index for MetS were obtained using the receiver operation characteristic (ROC) curve analysis by gender and age groups.
Results
Totally, 3843 students (52.3% boys) with mean (SD) age of 12.45 (3.04) years were assessed. The area under the ROC curve of TyG index for MetS was 0.83 in total participants. According to the ATP III criteria the cut-off values of the TyG index were 8.33 (8.21–8.45) in total students, 8.47 (8.36–8.58) in boys, and 8.33 (8.18–8.48) in girls. In the 7–12 and 13–18 years’ age groups, these values were 8.47 (8.32–8.63) and 8.34 (8.22–8.45) in total, 8.39 (8.26–8.52) and 8.47 (8.33–8.61) in boys, 8.33 (8.11–8.55) and 8.35 (8.22–8.47) in girls, respectively.
Conclusion
The findings of this study can be clinically helpful for screening MetS in children and adolescents but the effectiveness of these criteria needs to be evaluated by further longitudinal surveys.
Level of evidence
Level V, cross-sectional descriptive study (National surveillance study).
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Acknowledgements
This study was supported by the Ministry of Health and Medical education, Ministry of Education and Training, Isfahan University of Medical Sciences, and Endocrinology and Metabolism Research Institute of Tehran University of Medical Sciences. We are indebted to the participating schools, families and students in the study for their cooperation.
Funding
This study was funded by the Ministry of Health and Medical education, Ministry of Education and Training, Isfahan University of Medical Sciences, and Endocrinology and Metabolism Research Institute of Tehran University of Medical Sciences (Grant no. 194049).
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All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki Declaration and its later amendments or comparable ethical standards.
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Informed consent was obtained from all individual participants included in the study.
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Angoorani, P., Heshmat, R., Ejtahed, HS. et al. Validity of triglyceride–glucose index as an indicator for metabolic syndrome in children and adolescents: the CASPIAN-V study. Eat Weight Disord 23, 877–883 (2018). https://doi.org/10.1007/s40519-018-0488-z
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DOI: https://doi.org/10.1007/s40519-018-0488-z