Table 5.

Subgroup analysis of effects of patient and CT imaging characteristics on the GGN(CTR < 0.5) growth

Variables	Univariate			Multivariate
	OR	95% CI	p values	OR	95% CI	p values
Age	1.082	1.020–1.148	0.009	1.055	0.987–1.128	0.114
Gender	1.235	0.429–3.558	0.695
Initial size	0.967	0.835–1.119	0.967
Smoking history	1.120	0.340–3.684	0.852
Tumor history	0.638	0.067–6.057	0.695
Lobulation sign	1.129	0.415–3.581	0.719
Spiculation sign	1.361	0.308–6.024	0.685
Pleural indentation sign	1.143	0.266–4.906	0.857
Air bronchus sign	2.700	0.161–45.247	0.490
Vascular convergence sign	2.032	0.726–5.691	0.177
Vacuole sign	4.333	1.498–12.532	0.007	4.272	1.266–14.420	0.019
Vessel diameter	3.570	1.571–8.108	0.002	2.561	1.116–5.879	0.027

CI confidence interval; GGN ground-glass nodule; OR odds ratio