ROC curve analysis1 proposes BMI of 23.85 kg/m2 as the cut-off for overweight with a sensitivity of 70.2 per cent (95% CI 56.6 - 81.6) and 87.5 per cent specificity (95% CI 76.8-94.4) and a BMI of 24.38 kg/m2 with 90 per cent sensitivity (95% CI; 68.3-98.5) and 81.2 per cent specificity (95% CI; 72.2-88.3) for obesity. Earlier studies23,25 have shown poor sensitivity and specificity of BMI for diagnosis of obesity in the Asian ethnic groups using ROC curve analysis.