Table 4 ROC analysis of the maximum diameter and attenuation measurements on non-enhanced CT scans to discriminate IAC and progressive pGGNs.
Groups | Area | Std.Error | Asymplotic Sig.b | Cut-off Value | Asymptolic 95% Confidence Interval | |||
|---|---|---|---|---|---|---|---|---|
Cut-off Value | Sensitivity (%) | Specificity (%) | Lower Bound | Upper Bound | ||||
IAC& None-IAC | ||||||||
Maximum diameter | 0.865 | 0.046 | 0.000 | 11.5 | 75 | 91.8 | 0.776 | 0.955 |
Maximum CT value | 0.784 | 0.041 | 0.000 | −574.5 | 95.8 | 57.1 | 0.703 | 0.864 |
Difference CT value | 0.777 | 0.04 | 0.000 | 308.5 | 91.7 | 60.2 | 0.698 | 0.856 |
Relative CT value | 0.784 | 0.04 | 0.000 | 1.54 | 91.7 | 60.2 | 0.706 | 0.862 |
Progressive& None-progressive | ||||||||
Maximum diameter | 0.783 | 0.028 | 0.000 | 6.5 | 69.7 | 30.1 | 0.728 | 0.838 |
Maximum CT value | 0.722 | 0.029 | 0.000 | −532 | 57.6 | 86.2 | 0.715 | 0.83 |
Difference CT value | 0.774 | 0.029 | 0.000 | 323 | 65.9 | 85.4 | 0.716 | 0.831 |
Relative CT value | 0.776 | 0.029 | 0.000 | 1.57 | 66.7 | 82.9 | 0.719 | 0.834 |
