Table 3. Sensitivity, specific, PPV and NPV for specified BMI cut-offs, by ethnic group.
| BMI cut-off | Ethnic group | sensitivity | specificity | PPV | NPV |
|---|---|---|---|---|---|
| 20 kg/m2 | White | 95.2% | 14.0% | 2.1% | 99.4% |
| South Asian | 95.0% | 15.8% | 5.9% | 98.6% | |
| East Asian | 88.9% | 26.5% | 4.8% | 98.3% | |
| Black | 98.8% | 6.2% | 3.8% | 99.2% | |
| 21.5 kg/m2 | White | 87.5% | 33.7% | 2.4% | 99.3% |
| South Asian | 93.6% | 31.7% | 7.0% | 98.9% | |
| East Asian | 74.1% | 53.5% | 6.2% | 98.0% | |
| Black | 96.8% | 14.6% | 4.0% | 99.2% | |
| 23 kg/m2 | White | 75.8% | 52.6% | 2.9% | 99.1% |
| South Asian | 85.7% | 49.4% | 8.5% | 98.3% | |
| East Asian | 61.1% | 72.1% | 8.4% | 97.8% | |
| Black | 92.7% | 25.5% | 4.4% | 98.9% | |
| 25 kg/m2 | White | 59.2% | 71.4% | 3.8% | 98.9% |
| South Asian | 67.7% | 67.9% | 10.4% | 97.4% | |
| East Asian | 37.0% | 86.9% | 10.6% | 97.1% | |
| Black | 86.2% | 42.3% | 5.3% | 98.8% | |
| 27.5 kg/m2 | White | 43.9% | 84.2% | 5.0% | 98.8% |
| South Asian | 47.6% | 83.6% | 13.8% | 96.7% | |
| East Asian | 25.9% | 94.0% | 15.2% | 96.8% | |
| Black | 72.1% | 61.5% | 6.5% | 98.0% | |
| 30 kg/m2 | White | 32.1% | 90.0% | 6.3% | 98.6% |
| South Asian | 34.7% | 91.7% | 18.7% | 96.2% | |
| East Asian | 13.0% | 97.1% | 15.9% | 96.4% | |
| Black | 56.3% | 75.9% | 8.0% | 97.9% |
PPV: Positive predictive value, NPV: Negative predictive value