Table 3. Relevant factors influences operative time.

Parameters	0–14 min (N=65)	>14 min (N=24)	Univariable analysis		Multivariable analysis
			P		P	OR	95% CI
Age (years)	51.51±12.66	51.21±12.31	0.921		0.960	1.001	0.947–1.058
Sex, n (%)			0.105		0.015
Female	47 (72.31)	13 (54.17)				1
Male	18 (27.69)	11 (45.83)				8.187	1.504–44.564
Single nodule, n (%)	35 (53.85)	14 (58.33)	0.706		0.990	1.009	0.240–4.252
Nodule size (cm)	0.79±0.44	0.9 ±0.53	0.857		0.273	1.877	0.609–5.786
Distance from pleura (cm)	14.25±11.47	18.79±10.20	0.071		0.184	0.927	0.829–1.037
Characteristics, n (%)			0.822		0.553
GGO	50 (76.92)	19 (79.17)				1
Solid	15 (23.08)	5 (20.83)				1.619	0.330–7.951
Nodules location, n (%)			0.19		0.357
Lower lobe	26 (40.00)	5 (20.83)				1
Middle lobe	6 (9.23)	2 (8.33)			0.198	5.888	0.395–87.780
Upper lobe	33 (50.77)	17 (70.83)			0.210	3.095	0.530–17.830
Bronchus sign, n (%)			0.016		0.024
Yes	17 (26.15)	1 (4.17)				1
No	48 (73.85)	23 (95.83)				18.847	1.484–239.354
Phase, n (%)			0.002		0.001
I	10 (15.38)	1 (4.17)			0.792	0.684	0.040–11.585
II	19 (29.23)	17 (70.83)			<0.001	13.920	3.182–60.894
III	65 (55.38)	6 (25.00)				1