Table 3.
Cutoff value between area under curve, sensitivity, and specificity for obesity- and lipid-related indices to detect metabolic syndrome (CHARLS2011–2015) by sex.
| N = 3,088 | WC | BMI | WHtR | VAI | ABSI | BRI | LAP | CI | CVAI | TyG index | TyG-BMI | TyG-WC | TyG-WHtR |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Male (N = 1,968) | |||||||||||||
| Area under curve | 0.730 | 0.732 | 0.710 | 0.674 | 0.537 | 0.710 | 0.745 | 0.622 | 0.752 | 0.646 | 0.755 | 0.749 | 0.735 |
| Std. error | 0.018 | 0.017 | 0.017 | 0.017 | 0.019 | 0.017 | 0.016 | 0.019 | 0.016 | 0.018 | 0.016 | 0.016 | 0.017 |
| 95% CI | 0.695, 0.764 | 0.698, 0.766 | 0.675, 0.744 | 0.641, 0.708 | 0.500, 0.575 | 0.675, 0.744 | 0.713, 0.777 | 0.586, 0.659 | 0.721, 0.784 | 0.611, 0.682 | 0.723, 0.787 | 0.717, 0.781 | 0.703, 0.768 |
| P-value | 0.000 | 0.000 | 0.000 | 0.000 | 0.055 | 0.000 | 0.000 | 0.000 | 0.000 | 0.000 | 0.000 | 0.000 | 0.000 |
| Optimal cutoffs | 83.950 | 22.569 | 0.509 | 2.030 | 8.054 | 3.523 | 16.896 | 1.264 | 85.284 | 8.493 | 187.919 | 705.405 | 4.342 |
| J-Youden | 0.400 | 0.384 | 0.336 | 0.283 | 0.079 | 0.335 | 0.402 | 0.208 | 0.402 | 0.282 | 0.395 | 0.399 | 0.399 |
| Sensitivity (%) | 0.715 | 0.692 | 0.692 | 0.751 | 0.672 | 0.692 | 0.775 | 0.613 | 0.727 | 0.625 | 0.735 | 0.715 | 0.668 |
| Specificity (%) | 0.685 | 0, 692 | 0.644 | 0.532 | 0.407 | 0.644 | 0.627 | 0.595 | 0.675 | 0.657 | 0.660 | 0.683 | 0.694 |
| (+) Likelihood ratio | 2.270 | 2.247 | 1.944 | 1.605 | 1.133 | 1.942 | 2.079 | 1.514 | 2.239 | 1.821 | 2.162 | 2.260 | 2.183 |
| (–) Likelihood ratio | 0.416 | 0.445 | 0.478 | 0.468 | 0.806 | 0.479 | 0.359 | 0.650 | 0.404 | 0.571 | 0.402 | 0.416 | 0.478 |
| Female (N = 1,672) | |||||||||||||
| Area under curve | 0.654 | 0.638 | 0.645 | 0.632 | 0.543 | 0.645 | 0.674 | 0.596 | 0.687 | 0.607 | 0.656 | 0.674 | 0.663 |
| Std. error | 0.015 | 0.015 | 0.015 | 0.015 | 0.016 | 0.015 | 0.015 | 0.016 | 0.015 | 0.016 | 0.015 | 0.015 | 0.015 |
| 95% CI | 0.624, 0.683 | 0.608, 0.667 | 0.616, 0.675 | 0.602, 0.662 | 0.511, 0.575 | 0.616, 0.675 | 0.644, 0.703 | 0.565, 0.626 | 0.658, 0.716 | 0.576, 0.637 | 0.627, 0.685 | 0.645, 0.703 | 0.633, 0.692 |
| P-value | 0.000 | 0.000 | 0.000 | 0.000 | 0.009 | 0.000 | 0.000 | 0.000 | 0.000 | 0.000 | 0.000 | 0.000 | 0.000 |
| Optimal cutoffs | 82.700 | 21.923 | 0.517 | 3.244 | 7.918 | 3.680 | 23.723 | 1.275 | 86.785 | 8.297 | 187.164 | 644.630 | 4.265 |
| J-Youden | 0.240 | 0.224 | 0.231 | 0.225 | 0.089 | 0.231 | 0.264 | 0.175 | 0.276 | 0.203 | 0.233 | 0.252 | 0.235 |
| Sensitivity (%) | 0.574 | 0.708 | 0.725 | 0.589 | 0.775 | 0.725 | 0.644 | 0.574 | 0.603 | 0.711 | 0.656 | 0.821 | 0.773 |
| Specificity (%) | 0.666 | 0.516 | 0.506 | 0.636 | 0.313 | 0.506 | 0.620 | 0.601 | 0.673 | 0.492 | 0.577 | 0.431 | 0.462 |
| (+) Likelihood ratio | 1.719 | 1.463 | 1.468 | 1.618 | 1.129 | 1.468 | 1.695 | 1.439 | 1.844 | 1.400 | 1.551 | 1.443 | 1.437 |
| (–) Likelihood ratio | 0.640 | 0.566 | 0.543 | 0.646 | 0.718 | 0.543 | 0.574 | 0.709 | 0.590 | 0.587 | 0.596 | 0.416 | 0.491 |
WC, waist circumference; BMI, body mass index; WHtR, waist to height ratio; VAI, visceral adiposity index; ABSI, a body shape index; BRI, body roundness index; LAP, lipid accumulation product; CVAI, cardio-ankle vascular index; CI, conicity index; TyG, triglyceride and glucose index; TyG-BMI, TyG related to BMI; TyG-WC, TyG related to WC; TyG-WHtR, TyG related to WHtR.