P (%) | τ (%) | κ | Se (%, CI 95%) | Sp (%, CI 95%) | PPV (%, CI 95%) | PNV (%, CI 95%) | |
---|---|---|---|---|---|---|---|
Total | 55.6 | 70.4 | 0.44 | 46.7 (21.3 to 73.4) | 100 (73.5 to 100) | 100 (59 to 100) | 60 (36.1 to 80.9) |
Subpleural dots and branching opacities | 33.3 | 74 | 0.34 | 33.3 (7.5 to 70.1) | 94.4 (72.7 to 99.9) | 75 (19.4 to 99.4) | 73.9 (51.6 to 89.8) |
Curvilinear subpleural lines | 8 | 0 | 0 | 0 | 0 | 0 | 0 |
Areas of ground glass opacities | 25.9 | 77.8 | 0.2 | 14.3 (0.4 to 57.9) | 100 (83.2 to 100) | 100 (2.5 to 100) | 76.9 (56.4 to 91) |
Honeycombing | 0 | ||||||
Reticulations | 18.5 | 92.6 | 0.71 | 60 (14.7 to 94.7) | 100 (84.6 to 100) | 100 (29.2 to 100) | 91.7 (73 to 99) |
Septal lines | 14.8 | 85.2 | 0.26 | 25 (0.6 to 80.6) | 95.7 (78.1 to 99.9) | 50 (1.3 to 98.7) | 88 (68.8 to 97.5) |
τ, agreement with standard CT scan; κ, kappa coefficient; P, prevalence; PPV, positive predictive value; PVN, predictive negative value; Se, sensitivity; Sp, specificity.