Table 1.
Performance of lesion detection and localization
|
|
Lesions
|
Sensitivity, %
|
Specificity, %
|
PPV, %
|
NPV, %
|
| Overall | 1412 | 95.0 (93.7-96.0) | 99.1 (98.9-99.3) | 93.7 (92.3-94.9) | 99.3 (99.1-99.4) |
| Pathology | |||||
| Non-adenomatous polyps | 487 | 93.4 (90.8-95.4) | 99.1 (98.9-99.3) | 83.5 (80.0-86.5) | 99.7 (99.5-99.8) |
| Adenomatous polyps | 640 | 95.2 (93.1-96.6) | 99.1 (98.9-99.3) | 87.1 (84.4-89.5) | 99.7 (99.5-99.8) |
| Adenocarcinomas | 285 | 97.2 (94.3-98.7) | 99.1 (98.9-99.3) | 75.5 (70.7-79.7) | 99.9 (99.8-100.0) |
| Size | |||||
| ≤ 5 mm | 713 | 94.1 (92.1-95.7) | 99.1 (98.9-99.3) | 88.2 (85.6-95.3) | 99.6 (99.4-99.7) |
| 6-9 mm | 396 | 95.2 (92.5-97.0) | 99.1 (98.9-99.3) | 80.7 (76.8-84.1) | 99.8 (99.7-99.9) |
| ≥ 10 mm | 303 | 96.7 (93.8-98.3) | 99.1 (98.9-99.3) | 76.5 (71.9-80.6) | 99.9 (99.8-99.9) |
| Paris classification | |||||
| Ip | 180 | 96.0 (91.8-98.3) | 99.1 (98.9-99.3) | 65.8 (59.7-71.4) | 99.9 (99.8-1.00) |
| Is | 581 | 96.1 (94.0-97.4) | 99.1 (98.9-99.3) | 86.1 (83.2-88.6) | 99.8 (99.6-99.8) |
| IIa | 525 | 92.6 (89.9-94.6) | 99.1 (98.9-99.3) | 84.4 (81.1-87.2) | 99.6 (99.5-99.7) |
| IIb | 30 | 100.0 (85.9-100.0) | 99.1 (98.9-99.3) | 25.0 (17.7-33.9) | 100.0 (99.9-100.0) |
| IIc | 2 | 100.0 (19.8-100.0) | 99.1 (98.9-99.3) | 2.2 (0.4-8.4) | 100.0 (99.9-100.0) |
| III | 32 | 96.9 (82.0-99.8) | 99.1 (98.9-99.3) | 25.6 (18.3-34.5) | 100.0 (99.9-100.0) |
| Unclassified | 62 | 96.8 (87.8-99.4) | 99.1 (98.9-99.3) | 40.0 (32.2-48.3) | 100.0 (99.9-100.0) |
PPV: Positive predictive value; NPV: Negative predictive value.