Table 2.

Multivariate analysis for the risk of malignancy according to ground glass opacity size

Size	Total	Benign	Malignant	p-value	OR	95% CI
	(n =330)	(n =16)	(n =314)
< 10 mm	39	5 (31.3)	34 (10.8)	0.015
10 mm ≤ <15 mm	76	5 (31.3)	71 (22.6)	0.146	2.777	0.701 – 10.994
15 mm ≤	215	6 (37.5)	209 (66.6)	0.004	8.323	1.968 – 35.196

OR, odds ratio; CI, confidence interval.