TABLE 3.
Precision of AI on 0–3 OA scoring using the rheumatologist score as gold standard.
| Dataset | Joints | PEA (%) | PCA (%) | Sensitivity (%) | Specificity (%) |
| Validation | All joints | 75.05 | 95.01 | 52.90 | 89.12 |
| MCP | 83.44 | 100.00 | 63.33 | 91.74 | |
| PIP | 73.73 | 91.82 | 48.58 | 87.90 | |
| DIP | 72.73 | 95.04 | 38.89 | 92.94 | |
| CMC | 61.54 | 89.74 | 70.00 | 78.95 | |
| Test | All joints | 68.11 | 95.23 | 50.42 | 81.87 |
| MCP | 75.76 | 96.97 | 48.65 | 85.94 | |
| PIP | 70.27 | 96.62 | 46.67 | 83.90 | |
| DIP | 59.17 | 94.17 | 59.09 | 77.63 | |
| CMC | 50.00 | 82.14 | 25.00 | 60.00 |
PEA, Percent Exact Agreement; PCA, Percent Close Agreement; MCP, Metacarpophalangeal; PIP, Proximal Interphalangeal; DIP, Distal Interphalangeal; CMC, first carpometacarpal joint.