Table 10. Pulmonary Complication.

Variables	N	Univariable logistic regression				Multivariable logistic regression
			95% C.I for OR				95% C.I for OR
		OR	Lower	Upper	P-Value	OR	Lower	Upper	P-Value
Group
A*	322	1.00
B	386	0.65	0.46	0.93	0.017†	0.66	0.46	0.94	0.022
Gender
Male*	617	1.00
Female	91	1.48	0.91	2.41	0.117†
Age	708	1.03	1.01	1.05	0.001†	1.03	1.01	1.05	0.001
Preoperative treatment
No*	140	1.00
Yes	568	0.64	0.42	0.97	0.033†
Diabetes
No*	597	1.00
Yes	111	1.28	0.81	2.03	0.294
COPD
No*	663	1.00
Yes	45	1.92	1.02	3.63	0.045†
CAD
No*	589
Yes	119	1.15	0.73	1.81	0.562
Histology
Adenocarcinoma*	643	1.00				1.00
Squamous cell carcinoma	65	1.42	0.81	2.50	0.226†	1.77	0.92	3.38	0.087
Tumor location
Upper/cervical/middle*	63	1.00
Lower/GEJ	645	0.61	0.35	1.08	0.093†
Type of esophagectomy					0.045†				0.052
Ivor Lewis*	462	1.00				1.00
Transhiatal	59	1.61	0.88	2.95	0.126	1.36	0.73	2.54	0.329
Total	49	2.30	1.24	1.30	0.009	2.27	1.20	4.29	0.011
Minimal invasive	124	1.32	0.83	2.10	0.24	1.44	0.89	2.31	0.137
N/A	14	2.20	0.72	6.73	0.17	2.48	0.80	7.74	0.117
Minimal invasive surgery
No*	584	1.00
Yes	124	1.13	0.72	1.77	0.594
Pathological stage
0*	145	1.00
I	149	0.77	0.45	1.32	0.34
II	254	0.90	0.56	1.45	0.67
III	144	0.77	0.44	1.33	0.346
IV	16	1.75	0.60	5.15	0.31
Clinical stage
0*	5	1.00
I	108	0.55	0.09	3.47	0.52
II	253	0.37	0.06	2.27	0.28
III	314	0.48	0.08	2.92	0.42
IV	28	0.50	0.07	3.63	0.49
ASA-risk scale
1-2*	122	1.00
3-4	586	1.21	0.75	1.95	0.442
Salvage operation
No*	612
Yes	96	1.62	1.01	2.60	0.045†

^*Reference group.

^†Statistically significant for univariable analysis (p<0.25).

OR indicates odds ratio; CI, confidence interval; COPD, chronic pulmonary obstructive disease; CA, coronary artery disease; GEJ, gastroesophageal junction; ASA, American Society of Anesthesiologist.