Table 3.

Risk factors for procedure-related pneumothorax.

Variables	Univariate		Multivariate
	p	OR (95% CI)	p	OR (95% CI)
Sex (Ref: female)	0.032	0.633 (0.417–0.962)	0.418	0.825 (0.517–1.314)
Age (years)	0.113	1.015 (0.996–1.035)
Smoking	0.070	1.503 (0.967–2.336)
Procedure time (min)	<0.001	1.075 (1.051–1.100)	<0.001	1.079 (1.041–1.118)
Multiple localization	<0.001	2.721 (1.735–4.267)	0.464	0.712 (0.287–1.768)
Number of pleural puncture	<0.001	2.025 (1.497–2.740)	0.733	1.108 (0.616–1.992)
Position
Supine	0.529	0.873 (0.572–1.332)
Prone	0.640	1.102 (0.732–1.660)
Decubitus	0.026	11.541 (1.335–99.742)
Location (Ref: RUL)
RML	0.913	2.403 (0.349–4.281)
RLL	0.232	0.689 (0.374–1.270)
LUL	0.912	1.033 (0.576–1.854)
LLL	0.614	1.216 (0.568–2.603)
Nodule size (mm)	0.403	0.746 (0.376–1.483)
Nodule depth (mm)	0.288	1.211 (0.850–1.725)
Complex site	0.534	0.808 (0.413–1.581)
Lesion characteristic (Ref: ground glass)
Partial solid	0.647	1.122 (0.686–1.836)
Solid	0.771	0.922 (0.531–1.599)
Cavitation	1.000	–