Table 3 Diagnostic accuracy of the TyG-BMI
|  | Cut-off | No | SP (%) | SE (%) | PPV (%) | NPV (%) | PLR | NLR | Youden’s index |
|---|---|---|---|---|---|---|---|---|---|
Development |  ≥ 137.4 | 6405 | 12.2 | 99.9 | 19.8 | 99.9 | 1.14 | 0.006 | 0.121 |
 ≥ 147.8 | 5705 | 24.2 | 99.5 | 22.2 | 99.6 | 1.31 | 0.020 | 0.237 | |
 ≥ 156.7 | 4998 | 35.9 | 98.5 | 25.1 | 99.1 | 1.54 | 0.042 | 0.344 | |
 ≥ 165.0 | 4264 | 48.2 | 97.1 | 29.0 | 98.7 | 1.87 | 0.060 | 0.453 | |
 ≥ 173.3 | 3541 | 60.0 | 94.3 | 33.9 | 98.0 | 2.36 | 0.094 | 0.543 | |
 ≥ 182.2 | 2829 | 71.1 | 89.4 | 40.2 | 96.9 | 3.09 | 0.149 | 0.605 | |
 ≥ 192.8 | 2113 | 81.2 | 79.6 | 48.0 | 94.8 | 4.25 | 0.251 | 0.608 | |
 ≥ 205.4 | 1396 | 90.2 | 64.9 | 59.1 | 92.2 | 6.64 | 0.389 | 0.551 | |
 ≥ 224.0 | 686 | 96.6 | 38.1 | 70.7 | 87.8 | 11.09 | 0.641 | 0.347 | |
Validation |  ≥ 137.4 | 6447 | 12.1 | 99.8 | 19.3 | 99.7 | 1.14 | 0.013 | 0.119 |
 ≥ 147.8 | 5719 | 24.4 | 99.6 | 21.7 | 99.7 | 1.32 | 0.017 | 0.240 | |
 ≥ 156.7 | 4998 | 36.3 | 99.0 | 24.6 | 99.4 | 1.55 | 0.029 | 0.353 | |
 ≥ 165.0 | 4304 | 47.8 | 97.6 | 28.2 | 98.9 | 1.87 | 0.050 | 0.454 | |
 ≥ 173.3 | 3599 | 59.1 | 94.3 | 32.6 | 98.0 | 2.30 | 0.097 | 0.534 | |
 ≥ 182.2 | 2883 | 70.1 | 89.2 | 38.5 | 96.9 | 2.98 | 0.154 | 0.593 | |
 ≥ 192.8 | 2171 | 80.0 | 79.2 | 45.5 | 94.8 | 3.97 | 0.260 | 0.592 | |
 ≥ 205.4 | 1460 | 89.0 | 65.2 | 55.4 | 92.4 | 5.92 | 0.391 | 0.542 | |
≥ 224.0 | 742 | 96.3 | 41.8 | 70.1 | 88.7 | 11.18 | 0.605 | 0.381 |