Univariate analysis of endosonographic characteristics for benign disease
| OR (95% CI) | AUC | Sensitivity % | Specificity % | PPV % | NPV % | |
| Triangular shape | 17.4 (7.0–43.1) | 0.575 | 16 | 98.90 | 89.6 | 66.9 |
| Size | ||||||
| 6 mm | 1.37 (0.93–2.01) | 0.523 | 20.4 | 84.2 | 43 | 63.50 |
| 10 mm | 1.63 (1.2–2.2) | 0.559 | 49.3 | 62.6 | 43.5 | 67.9 |
| Ill-defined margin | 1.31 (0.95–2.63) | 0.519 | 11.60 | 92.60 | 46.9 | 64.2 |
| Central vessel present | 5.34 (3.37–8.46) | 0.6 | 26.3 | 93.7 | 71 | 68.6 |
AUC: area under the receiver operating characteristic curve; PPV: positive predictive value; NPV: negative predictive value.