Diagnostic Performance of Qualitative and Quantitative Readings After Initial Instruction and After Dedicated Training
| Quantitative | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Visual assessment | Positive = ratio > 1.2 | Positive = ratio > 1.3 | |||||||
| Reader | Positivity rate | Sensitivity | Specificity | Positivity rate | Sensitivity | Specificity | Positivity rate | Sensitivity | Specificity |
| Initial instruction | |||||||||
| R1 | 27 (48%) | 81.8% | 59.5% | 6 (11%) | 54.5% | 100% | 4 (7%) | 36.4% | 100% |
| R2 | 12 (21%) | 90.9% | 95.2% | 6 (11%) | 54.5% | 100% | 3 (5%) | 27.3% | 100% |
| R3 | 24 (43%) | 90.9% | 69.0% | 11 (20%) | 63.6% | 90.5% | 4 (7%) | 36.4% | 100% |
| R4 | 5 (9%) | 45.5% | 100% | 9 (16%) | 54.5% | 92.9% | 5 (9%) | 45.5% | 100% |
| Reference | 11 (21%) | 11 (21%) | 11 (21%) | ||||||
| Dedicated training | |||||||||
| R1 | 42 (58%) | 95.1% | 90.3% | 38 (53%) | 85.4% | 90.3% | 34 (47%) | 80.5% | 96.8% |
| R2 | 47 (64%) | 100% | 81.8% | 34 (46%) | 82.9% | 100% | 29 (39%) | 70.7% | 100% |
| R3 | 46 (61%) | 97.6% | 84.4% | 42 (56%) | 95.1% | 93.8% | 37 (49%) | 87.8% | 100% |
| R4 | 45 (58%) | 97.6% | 90.9% | 40 (54%) | 95.1% | 96.9% | 31 (42%) | 75.6% | 100% |
| Reference | 42 (56%) | 42 (56%) | 42 (56%) | ||||||