Table 5.

Results of multivariable logistic regression

Predictor	OR (95% CI)	p value
Age	1.01 (0.94–1.09)	0.81
Smoking pack-years	1.00 (0.99–1.01)	0.15
Chest tube duration	0.27 (0.09–0.81)	0.02
Clinical stage
I Ref		0.06
II–III	0.11 (0.01–1.05)
Surgeon (D v. A)	4.98 (1.22–20.34)	0.025

CI = confidence interval; OR = odds ratio; Ref = reference category.