Table 3.

Association of positivity by BW sequencing with characteristics of lung lesions.

	Univariate analysis		Multivariate analysis
	OR (95 % CI)	P	OR (95 % CI)	P
Age, continuous	1.00 (0.97–1.04)	0.781
Sex
Men	1.21 (0.59–2.46)	0.604
Women	Reference
Smoking history
Ever	1.02 (0.50–2.10)	0.961
Never	Reference
Location
Inner	4.23 (1.46–12.27)	0.008	1.62 (0.48–5.42)	0.435
Mid	2.24 (0.97–5.17)	0.059	1.56 (0.60–4.11)	0.365
Outer	Reference		Reference
Size
≥3cm	4.61 (2.08–10.22)	<0.001	1.99 (0.80–4.98)	0.140
<3cm	Reference		Reference
Bronchus sign
Yes	5.96 (1.35–26.21)	0.018	2.10 (0.40–10.86)	0.378
No	Reference		Reference
Tumor necrosis on chest CT
Yes	9.49 (4.11–21.91)	<0.001	6.45 (2.62–15.85)	<0.001
No	Reference		Reference

BW = bronchial washing; OR = odds ratio; CI = confidence interval.