Table 3.

Correlation between independent variables and postoperative complications

	Univariate Analysis			Multivariate Analysis
Independent variables	OR	95% CI	p-value	OR	95% CI	p-value
Gender (Male vs. Female)	2.530	1.448 – 4.419	0.001	1.711	0.839 – 3.489	0.139
Age	1.038	1.009 – 1.067	0.010	1.043	1.012 – 1.075	0.006
BMI	0.948	0.887 – 1.014	0.122	0.984	0.910 – 1.065	0.691
Smoking history (BI≥200 vs. BI<200)	2.533	1.370 – 4.684	0.003	1.596	0.738 – 3.453	0.235
Resected lobe (Others vs. Right upper lobectomy)	0.968	0.836 – 1.121	0.665	0.988	0.844 – 1.156	0.875
FEV1%	0.967	0.945 – 0.989	<0.004	1.004	0.973 – 1.029	0.980
LAV%	1.073	1.038 – 1.110	<0.001	1.056	1.016 – 1.098	0.006

OR, odds ratio; CI, confidence interval; BMI, body mass index; BI, brinkman index; FEV₁, forced expiratory volume in 1 second; LAV, low-attenuation volume