Table 3.

Ability to distinguish IPA between the LPA group and n-LPA group using the backward elimination process of binary logistic regression

Feature	B	SE	P value	OR	95% CI
Mean CT value	0.009	0.001	< 0.001	1.009	1.007, 1.011
CTR	−0.018	0.007	0.007	0.982	0.969, 0.995
Deep lobulation	1.179	0.257	< 0.001	3.250	1.962, 5.382
Spiculation	0.667	0.216	0.002	1.949	1.275, 2.977
Vascular change	0.944	0.231	< 0.001	2.571	1.636, 4.041
Bronchial change	0.557	0.265	0.036	1.745	1.037, 2.935
Constant	2.346	0.660	< 0.001	10.441

LPA Lepidic-predominant adenocarcinoma, n-LPA Nonlepidic-predominant adenocarcinoma, CTR Consolidation-to-tumor ratio, SE Standard error, OR Odds ratio (OR > 1 indicates the risk factor of n-LPA; OR < 1 indicates the protective factors of n-LPA). P < 0.05 was considered statistically significant