Table 3. Multivariate analysis to determine the independent risk factors for hemoptysis complicating ultrasound-guided transthoracic needle lung biopsy.

Variables	P value	Odds ratio	95% confidence interval
Pathology (vs. malignant)
Benign	0.196	1.971	0.705–5.509
Grade of air bronchial sign (vs. non-air bronchogram)
Minor-air bronchogram	0.173	2.640	0.654–10.657
Multi-air bronchogram	<0.001	8.946	2.873–27.863