Table 3. Odds ratios of correct diagnostic performance of bronchoscopy.

Characteristic	OR (95.0% CI)	P-value
Tumor size (cm)
<2.0	1 (Ref.)
2.0−3.0	2.91 (1.31−7.60)	0.017*
>3.0	9.68 (3.90−25.55)	<0.001*
Tumor location
Peripheral	1 (Ref.)
Middle	1.77 (0.90−4.96)	0.160
Central	5.06 (1.43−13.68)	0.014*

*P < 0.05

OR, odds ratio; CI, confidence interval; Ref., reference