Table 3.
Performance characteristics of MR, multidetector CT (MDCT) and endoscopic ultrasonography (EUS) for local invasion (T stage) and metastatic lymph nodes (N stage)
| Preoperative T and N staging | MR | MDCT | EUS | MR vs MDCT |
MR vs EUS |
MDCT vs EUS |
|---|---|---|---|---|---|---|
| p-value | p-value | p-value | ||||
| T stage | ||||||
| Sensitivity | 67 | 83 | 100 | 0.56 | 0.16 | 0.32 |
| Specificity | 92 | 75 | 67 | 0.16 | 0.08 | 0.56 |
| Accuracy | 83 | 78 | 78 | 1 | 1 | 1 |
| PPV | 80 | 62 | 60 | 0.68 | 0.12 | 0.29 |
| NPV | 85 | 90 | 100 | 0.68 | 0.12 | 0.29 |
| N stage | ||||||
| Sensitivity | 100 | 75 | 100 | 0.31 | 1 | 0.31 |
| Specificity | 57 | 57 | 36 | 1 | 0.08 | 0.08 |
| Accuracy | 66 | 61 | 50 | 1 | 0.25 | 0.61 |
| PPV | 40 | 33 | 31 | 0.29 | 1 | 0.29 |
| NPV | 100 | 89 | 100 | 0.29 | 1 | 0.29 |
NPV, negative-predictive value; PPV, positive-predictive value.
Data are percentages and p-values are in bold.