The solid component within part-solid nodules: 3-dimensional quantification, correlation with the malignant grade of nonmucinous pulmonary adenocarcinomas, and comparisons with 2-dimentional measures and semantic features in low-dose computed tomography

Table 3 Multivariable logistic regressions of selected features for differentiating low-risk from high-risk nonmucinous pulmonary adenocarcinomas in the training cohort

Models		Odds ratio	95% confidence interval	P
Semantic	Lobulation			< 0.001
	No ^a	1
	Yes	6.153	3.028–12.505
	Pleural indentation			0.003
	No ^a	1
	Yes	2.655	1.400–5.075
	Air bronchogram			< 0.001
	No ^a	1
	Yes	4.153	2.012–8.575
2-dimensional	Maximal diameter	1.128	1.069–1.190	< 0.001
	CTR	1.082	1.055–1.110	< 0.001
CTRV_− 250HU	CTRV_− 250HU	1.176	1.123–1.231	< 0.001

^a Features were set as reference. CTR, consolidation-to-tumor ratio; CTRV, consolidation/tumor ratio of volume

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