Table 1.
Diagnostic performance of T2 – shine through effect in DWI for detecting response to percutaneous treatments.
| n | TP | TN | FP | FN | AUC % (95% CI) | Sensitivity % (95% CI) | Specificity % (95% CI) | Accuracy % (95% CI) | NPV % (95% CI) | PPV % (95% CI) | |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Second month | |||||||||||
| Study group | 77 | 35 | 19 | 4 | 19 | 97.1 (94.9–99.4) | 65.2 (64.2–66.8) | 83.2 (82.2–84.4) | 70.1 (69.3–71.4) | 50.6 (49.3–51.4) | 90.5 (89.3–91.5) |
| Control group | 77 | 6 | 39 | 8 | 24 | 96.2 (95.4–97.8) | 22.2 (21.5–23.2) | 83.4 (82.5–84.7) | 58.2 (57.4–59.7) | 62.1 (61.1–63.2) | 43.4 (42.1–44.5) |
| Fourth month | |||||||||||
| Study group | 77 | 41 | 19 | 1 | 16 | 97.7 (96.1–97.4) | 72.3 (71.1–73.4) | 95.4 (94.2–95.5) | 78.2 (77.2–78.7) | 54.2 (53.1–55.6) | 98.3 (97.1–99.4) |
| Control group | 77 | 6 | 41 | 7 | 24 | 97.4 (96.1–98.4) | 22.2 (21.3–23.6) | 61.5 (60.2–62.7) | 62.3 (61.1–63.9) | 63.4 (62.4–64.7) | 46.2 (45.3–47.8) |
| Sixth month | |||||||||||
| Study group | 77 | 53 | 19 | 4 | 1 | 98.7 (97.3–99.4) | 98.1 (97.2–99.2) | 83.2 (82.2–84.5) | 94.6 (93.7–94.2) | 95.7 (94.1–96.7) | 93.6 (92.1–94.8) |
| Control group | 77 | 2 | 65 | 3 | 7 | 98.5 (97.1–99.3) | 22.4 (21.5–23.8) | 96.5 (95.1–97.7) | 87.7 (86.1–88.9) | 91.2 (90.2–92.8) | 42.6 (41.2–43.9) |
TP: true positive; TN: true negative; FP: false positive; FN: false negative; AUC: area under the receiver operating characteristic curve; CI: confidence interval; NPV: negative predictive value; PPV: positive predictive value.