Table 5 Summary of the statistical results regarding “step 2 blinded validation analysis”
Mild CTSI | Moderate CTSI | Severe CTSI | ||
|---|---|---|---|---|
Mild clinical disease | 86 (91%) | 6 | 2 (with patchy crazy-paving and early fibrosis) | Total (disease) = 94 |
Borderline severe clinical disease | 1 | 14 (82%) | 2 (with patchy crazy-paving and early fibrosis) | Total (disease) = 17 |
Severe or critical disease | 4 | 3 | 14 (67%) | Total (disease) = 21 |
Total (CT) | 91 (69%) | 23 (17%) | 18 (14%) | Total = 132 |
Prevalence | 71.2% | 12.9% | 15.9% | |
Sensitivity | 91.5% | 82.4% | 66.7% | Mean = 80.2% |
Specificity | 86.8% | 92.2% | 96.4% | Mean = 91.8% |
PPV (positive predictive value) | 94.5% | 60.9% | 77.8% | Mean = 77.7% |
NPV (negative predictive value) | 80.5% | 97.2% | 93.9% | Mean = 90.5% |
IOA (inter-observer agreement) | 87.5% | 81.3% | 100% | Mean = 89.6% |
AUC (area under curve) | 0.9003 | 0.83007 | 0.7765 | Mean = 0.8356 |
Confidence interval | 0.832 | 0.748 | 0.684 | Mean = 0.7546 |
Accuracy | 90.1% | 90.9% | 91.7% | Mean = 90.9% |
Validity of the test | Excellent | Good | Fair |