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Sensitivity, specificity, PPV and NPV for preoperative grade prediction
| Grade 1 | Grade 2 | Grade 3 | |
|---|---|---|---|
| Sensitivity | 77.3% | 53.2% | 56.5% |
| Specificity | 67.5% | 77.0% | 93.4% |
| PPV | 63.4% | 65.8% | 57.7% |
| NPV | 80.3% | 66.5% | 93.1% |
| Accuracy | 75.5% | 66.2% | 88.3% |
PPV: positive predictive value, NPV: negative predictive value
