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. 2025 Apr 16;15(1):13084.
doi: 10.1038/s41598-025-97212-y.

The cutoff points of body roundness index for predicting metabolic syndrome in the Brazilian population among 18-59 years

Camila Bruneli do Prado  1 , Monica Cattafesta  2 , Cleodice Alves Martins  3 , Dixis Figueroa Pedraza  3   4 , Yasmin Franco Rodrigues Silva  2 , Júlia Rabelo Santos Ferreira  3 , Luciane Bresciani Salaroli  3   2
Affiliations

The cutoff points of body roundness index for predicting metabolic syndrome in the Brazilian population among 18-59 years

Camila Bruneli do Prado et al. Sci Rep. .

Abstract

This study aimed to establish cutoff points for the body roundness index as a predictor of metabolic syndrome in a Brazilian adult population. This population-based cross-sectional study was conducted with data from a subsample of laboratory tests from the 2013 National Health Survey. The adult population aged 18-59 years was considered. To determine the cutoff point for the body roundness index according to the risk classification for metabolic syndrome, high waist circumference and the presence of three other risk components according to international criteria were used. An analysis of the receiver operating characteristic (ROC) curve was performed to analyze the specificity and sensitivity. The cutoff points for both sexes were similar, resulting in a cutoff point for women of 3.757 (AUC: 0.833), with a sensitivity of 90.7% and a specificity of 63.0%, whereas for men, the cutoff point was 3.965 (AUC: 0.906), with a sensitivity of 93.1% and specificity of 76.4%. The body roundness index has great discriminatory power for predicting metabolic syndrome in the Brazilian population and can be incorporated into clinical practice.

Keywords: Anthropometric measures; Body roundness index; Metabolic syndrome.

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Conflict of interest statement

Declarations. Competing interests: The authors declare no competing interests. Ethics approval and consent to participate: The PNS 2013 was approved by the National Research Ethics Committee (CONEP) at the National Health Council of the Ministry of Health (Opinion No. 328.159, of June 26, 2013). This study was approved by the Research Ethics Committee of the Federal University of Espírito Santo for the use of secondary data under opinion no. 6.420.963 (CCAE 74266923.1.0000.5060).

Figures

Fig. 1
Fig. 1
Flowchart of the sample of adults aged 18–59 years who met the study inclusion criteria. Subsample of the National Health Survey, Brazil, 2013.
Fig. 2
Fig. 2
ROC curve of the body roundness index for predicting metabolic syndrome in the Brazilian female population. AUC – area under the curve.
Fig. 3
Fig. 3
ROC curve of the body roundness index for predicting metabolic syndrome in the Brazilian male population. AUC – area under the curve.
Fig. 4
Fig. 4
Analysis of area under the curve values ​​for the body roundness index to identify components of MetS in the Brazilian female population.
Fig. 5
Fig. 5
Analysis of area under the curve values ​​for the body roundness index to identify components of MetS in the Brazilian male population.
See this image and copyright information in PMC

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