Table 4.
Z-Score sensitivity and specificity based on computer-aided joint space analysis dependent on onset of erosions
| Z-Score | Sensitivity (%) | Specificity (%) |
|---|---|---|
| Metacarpal-phalangeal joint | ||
| Thumb | 73.2 | 51.7 |
| Index finger | 87.9 | 55.2 |
| Middle finger | 75.8 | 55.2 |
| Ring finger | 70.1 | 51.7 |
| Little finger | 77.1 | 51.7 |
| Total | 85.4 | 55.2 |
| Proximal-interphalangeal joint | ||
| Index finger | 74.5 | 44.8 |
| Middle finger | 70.7 | 58.6 |
| Ring finger | 69.4 | 58.6 |
| Little finger | 63.1 | 51.7 |
| Total | 67.5 | 51.7 |
| Distal-interphalangeal joint | ||
| Index finger | 58.6 | 41.4 |
| Middle finger | 53.5 | 48.3 |
| Ring finger | 62.4 | 41.4 |
| Little finger | 51.0 | 48.3 |
| Total | 53.5 | 37.9 |