Table 2 Diagnostic accuracy value of ultra-low-dose CT scan findings compared to low-dose chest CT
Low-dose chest CT | Diagnostic accuracy (95%CI) | Kappa (P value) | ||||||
|---|---|---|---|---|---|---|---|---|
Present | Absent | Sensitivity (95%CI) | Specificity (95%CI) | PPV (95%CI) | NPV (95%CI) | |||
Ultra-low-dose chest CT | ||||||||
Present | 44 (26.3) | 2 (1.2) | 100 (89.9–100) | 98.4 (93.7–99.7) | 95.7 (84–99.2) | 100 (96.1–100) | 98.8 (95.7–99.7) | 0.83 (< 0.001) |
Absent | 0 | 121 (75.5) | ||||||