Table 2 Performance of low thoracic vertebral bone mineral density (TBMD)
Osteopenia + Osteoporosis | Osteoporosis | Osteopenia | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Accuracy | PPV | NPV | Se | Sp | Accuracy | PPV | NPV | Se | Sp | Accuracy | PPV | NPV | Se | Sp | ||
Population one | TBMDa | 88.4% | 100.0% | 62.4% | 85.6% | 100.0% | 89.3% | 97.9% | 85.6% | 75.0% | 98.9% | 77.5% | 73.6% | 80.0% | 69.8% | 82.9% |
TBMDb | 93.3% | 98.9% | 75.8% | 92.7% | 95.8% | 94.3% | 92.3% | 95.3% | 93.0% | 95.1 | 87.4% | 89.4% | 86.2% | 78.2% | 93.6% | |
TTBMD | 94.3% | 96.2% | 86.1% | 96.7% | 83.9% | 94.1% | 95.0% | 95.8% | 93.9% | 94.3% | 88.4% | 86.1% | 89.9% | 85.1% | 90.6% | |
Population Two | TBMDa | 77.3% | 96.7% | 63.0% | 65.9% | 96.2% | 93.6% | 100.0% | 93.1% | 55.0% | 100% | 76.6% | 95.0% | 70.3% | 55.9% | 97.3% |
TBMDb | 90.8% | 92.3% | 88.5% | 92.1% | 86.8% | 99.2% | 100% | 99.2% | 95.0% | 99.2 | 90.1% | 89.9% | 91.7% | 91.2% | 90.4% | |
TTBMD | 86.5% | 80.7% | 96.2% | 97.3% | 75.0% | 98.6% | 95.0% | 99.2% | 95.0% | 99.2% | 86.5% | 96.2% | 80.9% | 74.6% | 97.3% | |