Fig. 1From: Optimal cut-off points for waist circumference in the definition of metabolic syndrome in Brazilian adults: baseline analyses of the Longitudinal Study of Adult Health (ELSA-Brasil)Restricted cubic spline graphical analysis, showing the odds ratios for waist circumference. The dashed line shows odds ratios, and their upper and lower 95% confidence intervals are shown in grey. Reference category for WC was defined by the first quartile value for men (< 87.5 cm) and women (< 78 cm)Back to article page