Table 3.
Comparison of the improvement of endoscopists under computer-assisted detection-white-light imaging and computer-assisted detection-narrow-band imaging
|
|
2nd phase CAD-WLI assistance
|
3rd phase CAD-NBI assistance
|
P
value
|
| Sensitivity, % (95%CI) | |||
| All, n = 20 | 86.4 (83.1-89.6) | 83.1 (79.6-86.6) | 0.162 |
| Experienced, n = 4 | 96.8 (94.4-99.2) | 95.7 (91.8-99.5) | 0.454 |
| Mid-level, n = 8 | 84.5 (80.0-89.0) | 82.6 (79.4-85.9) | 0.435 |
| Junior, n = 8 | 83.0 (79.3-86.6) | 77.3 (74.9-79.7) | 0.008 |
| Specificity, % (95%CI) | |||
| All, n = 20 | 88.7 (86.5-90.8) | 94.4 (93.0-95.8) | 0.000 |
| Experienced, n = 4 | 94.5 (87.9-100) | 97.2 (93.6-100) | 0.310 |
| Mid-level, n = 8 | 85.9 (84.3-87.4) | 92.6 (90.7-94.5) | 0.000 |
| Junior, n = 8 | 88.6 (85.1-92.1) | 94.9 (92.5-97.2) | 0.003 |
| Accuracy, % (95%CI) | |||
| All, n = 20 | 87.7 (85.5-89.9) | 89.7 (87.8-91.5) | 0.156 |
| Experienced, n = 4 | 95.5 (92.4-98.6) | 96.5 (93.6-99.4) | 0.469 |
| Mid-level, n = 8 | 85.3 (83.1-87.5) | 88.4 (87.1-89.7) | 0.012 |
| Junior, n = 8 | 86.2 (84.2-88.3) | 87.5 (86.0-89.0) | 0.261 |
| PPV, % (95%CI) | |||
| All, n = 20 | 84.9 (82.2-87.5) | 91.6 (89.7-93.6) | 0.000 |
| Experienced, n = 4 | 93.0 (85.1-100) | 96.1 (91.4-100) | 0.325 |
| Mid-level, n = 8 | 81.3 (79.4-83.2) | 89.2 (86.7-91.7) | 0.000 |
| Junior, n = 8 | 84.4 (80.5-88.2) | 91.8 (88.4-95.2) | 0.004 |
| NPV, % (95%CI) | |||
| All, n = 20 | 90.1 (87.9-92.3) | 88.7 (86.5-90.9) | 0.361 |
| Experienced, n = 4 | 97.7 (96.0-99.3) | 96.9 (94.2-99.6) | 0.465 |
| Mid-level, n = 8 | 88.5 (85.6-91.4) | 88.1 (86.2-89.9) | 0.755 |
| Junior, n = 8 | 87.8 (85.6-90.1) | 85.2 (83.9-86.5) | 0.031 |
CAD: Computer-assisted detection; CI: Confidence interval; NBI: Narrow-band imaging; NPV: Negative predictive value; PPV: Positive predictive value; WLI: Whit-light imaging.