• Solange Parra-Soto, Nicole Lasserre-Laso, Claudia Troncoso-Pantoja, Fanny Petermann-Rocha, María Adela Martínez-Sanguinetti, Miquel Martorell, Karina Ramírez, Ana María Labraña, Gabriela Nazar, Lorena Mardones, Ana María Leiva-Ordóñez, Ximena Díaz-Martínez, and Carlos Celis-Morales.
• Departamento de Nutrición y Salud Pública, Universidad del Bio-Bío, Chillán, Chile.
• Rev Med Chil. 2023 Jun 1; 151 (6): 687695687-695.

IntroductionA Body Shape Index (ABSI) is a new obesity index based on body volume; this has been associated with chronic non-communicable diseases and mortality, independent of the values of the body mass index (BMI); however, its association with type 2 diabetes mellitus (T2DM) in the Chilean adult population is unknown.ObjectiveTo determine the association between ABSI, glycemia, glycosylated hemoglobin (HbAc1), and self-reported T2DM in the Chilean adult population.Materials And MethodsIn a cross-sectional study, 4,874 participants were included (mean age 43.3 years, 50.9% women) from the 2016-2017 National Health Survey. ABSI was calculated according to the proposed formula (based on waist circumference, BMI, and height). The Poisson regression was used to investigate the association between ABSI and T2DM, and linear regression was used to investigate the association between ABSI, glycemia, and HbAc1. Sociodemographic factors, lifestyle, and BMI adjusted the analyses.ResultsABSI was positively associated with glycemia (p < 0.001), HbA1c (p < 0.001), and DMT2 (p < 0.001). In the most adjusted model, for every 0.025 unit increase in ABSI, glycemia increased by 1.78 mg/dL (95% CI: 1.21, 2.35) and HbAc1 by 0.92% (95% CI: 0.49, 1.35). Regarding T2DM, the prevalence ratio was 1.14 (95% CI: 1.09, 1.20), independent of sociodemographic factors, lifestyles, and BMI.ConclusionsABSI was linearly associated with a higher probability of suffering from T2DM and higher levels of glycemia and HbA1c in Chilean adults. In this context, ABSI could be a complementary index, independent of BMI, to assess the risk of metabolic disorders associated with obesity.

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