Table 1.

Univariate analysis of categorical data using Fisher's exact test.

	Patients with air embolism			Patients without air embolism
	Factor present	Factor not present	%	Factor present	Factor not present	%	Significance FET
Prone position	19	4	82.6	269	318	45.8	0.0005 (s)
Lobar location: Upper lobe, middle lobe or lingular segments	10	13	43.5	391	196	66.6	0.0261 (s)
Bleeding of any extent visible	18	5	78.3	382	205	65.01	0.053 (ns)
Intubation anesthesia	17	6	74	308	279	52.5	0.0543 (ns)
Mycosis present	2	21	8.7	16	571	2.7	0.1443 (ns)
Necrosis present within the lesion	6	17	26.0	88	499	15	0.1467 (ns)
Needle path through ventilated lung	20	3	87	452	135	77	0.3203 (ns)
Hemoptysis	1	22	4.3	11	576	1.8	0.3722 (ns)
Pneumothorax	5	18	21.8	89	498	15.1	0.3784 (ns)
Gender (female)	8	15	34.8	244	343	41.6	0.6669 (ns)
Fibrin glue line complete	17	6	74	404	183	69	0.8185 (ns)
Vasculitis present	0	23	0	6	581	1.02	1 (ns)

Abbreviations: FET-Fisher's exact test; ns-not significant; s-significant