Table 3.

Risk factors for invasiveness of the ground-glass nodule (GGN) in the training set.

	Univariate logistic regression		Multivariate logistic regression
Characteristics	OR (95%CI)	p	OR (95%CI)	p
Intra-nodular model
Rad-score	5.027 (2.500–10.105)	<0.001	NA	NA
Peri-nodular model
Rad-score	7.148 (2.722–18.771)	<0.001	NA	NA
Gross model
Rad-score	5.435 (2.548–11.429)	<0.001	14.420 (3.700–56.180)	<0.001
Clinical model
Age	1.056 (1.011–1.104)	0.015	NA	NA
Diameter	1.149 (1.037–1.273)	0.008	0.800 (0.605–0.980)	0.031
Spiculation	4.800 (1.599–14.410)	0.005	NA	NA
Lobulation	3.200 (1.231–8.317)	0.016	NA	NA
Vessel convergence	3.542 (1.225–10.236)	0.019	NA	NA

CI, confidence interval; GGN, ground-glass nodule; OR, odds ratio; NA, not available.