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Diagnostic value based on the number of factors predicting malignancy.
| Number of factors | n (%) | Sensitivity (%) | Specificity (%) | PPV (%) | NPV (%) | Accuracy (%) |
|---|---|---|---|---|---|---|
| 1 | 40 (33%) | 75 | 46 | 15 | 93 | 49 |
| 2 | 36 (30%) | 91 | 64 | 56 | 82 | 73 |
| 3 | 7 (6%) | 67 | 91 | 57 | 74 | 87 |
| ≥4 | 6 (5%) | 67 | 93 | 67 | 72 | 89 |
| ≥1 | 89 (74%) | 94 | 34 | 38 | 94 | 53 |
PPV: positive predictive value; NPV: negative predictive value.
