Table 3. Univariate logistic regression analysis for predictive factors in the primary cohort.

Variables	Odds ratio	P value	AUC	Sensitivity	Specificity	Cut-off
Gender	2.353	0.012	0.596	0.453	0.740
Age	1.040	0.018	0.618	0.750	0.490	>50.0 years
Shape	1.925	0.045	0.581	0.547	0.615
Margin	3.462	0.032	0.563	0.938	0.188
Lobulation	5.096	0.003	0.583	0.219	0.948
Air bronchogram	5.426	0.001	0.602	0.266	0.938
Vacuole	2.414	0.008	0.607	0.547	0.667
Vessel type	21.884	<0.001	0.823	0.844	0.802
Diameter	1.383	<0.001	0.773	0.703	0.729	>10.0 mm
Volume	1.002	<0.001	0.792	0.906	0.542	>348.1 mm3
Attenuation	1.005	0.036	0.599	0.469	0.729	>−636.3 HU

AUC, area under curve.