TABLE 4.

The factors affecting puncture times, by nodules

Factors	With		Without		p‐value	Binary logistic regression for puncture times 1 vs. ≧2
	Mean	SD	Mean	SD		Odds ratio	95% CI		p‐value
Difficult zone	1.33	0.71	1.19	0.45	0.002*	0.587	0.104	3.330	0.548
Mediastinum	1.41	0.75	1.21	0.52	0.002*	2.236	0.398	12.562	0.351
Cross lobe	1.24	0.44	1.24	0.58	0.96	3.451	0.513	23.223	0.203
Diaphragm	1.36	0.80	1.23	0.54	0.096	4.458	0.672	29.568	0.112
Fissure	1.19	0.54	1.25	0.57	0.531	0.797	0.129	4.926	0.807
Scapula	1.39	0.84	1.24	0.56	0.256	1.396	0.229	8.511	0.718
Smoker	1.21	0.47	1.25	0.58	0.734	2.325	0.736	7.340	0.150
Hookwire	1.26	0.54	1.25	0.59	0.813	1.389	0.541	3.562	0.494
Correlation	R				p‐value
Angle	−0.002				0.953	0.996	0.976	1.016	0.669
Δanglea	0.209				0.000*	1.158	1.010	1.289	0.008*
Depth to skin	0.152				0.000*	1.000	0.977	1.024	0.994
Depth to pleura	0.164				0.000*	1.038	0.996	1.081	0.074
Nodule size	0.073				0.074	1.050	0.922	1.195	0.462

^a Angle, angle difference between plan and practice.

^* p < 0.005.