Predicted probabilities and test statistics for significant morphological predictors if all/none are present
| Positive characteristics n | Size <10 mm | Central vessel | Predictive probability (95% CI) | Sensitivity % | Specificity % | NPV % |
| 0 | 0 | 0 | 0.28 (0.25–0.32) | 35 | 42 | 52 |
| 1 | 1 | 0 | 0.37 (0.33–0.41) | 39 | 65 | 64 |
| 1 | 0 | 1 | 0.62 (0.54–0.71) | 16 | 96 | 66 |
| 2 | 1 | 1 | 0.81 (0.72–0.91) | 10 | 98 | 65 |
NPV: negative predictive value.