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HOMA-IR and liver enzymes according to BMI. A graphical presentation of the distribution of the HOMA-IR (box A), GGTP (box B), AST (box C), and ALT (box D) among the subjects, according to BMI category. BMI: body mass index; ALT: alanine transaminase; AST: aspartate transaminase; GGTP: gamma-glutamyl transferase; HOMA-IR: Homeostatic Model Assessment for Insulin Resistance; grade I obesity: BMI 30–34.9 kg/m2; grade II obesity: BMI 35–39.9 kg/m2; grade III obesity: BMI ≥ 40 kg/m2.
