Table 1.

Demographic and perioperative features of the patients

	Control Group	Tube Group	P value	Total
Age	64.51 ± 5.13	64.36 ± 4.83	0.790	64.42 ± 4.96
Gender			0.739
Male	118 (85.5%)	152 (87.4%)		270 (86.5%)
Female	20 (14.5%)	22 (12.6%)		42 (13.5%)
Smoking			0.204
No	25 (18.1%)	22 (12.6%)		47 (15.1%)
Yes	113 (81.9%)	152 (87.4)		256 (84.9%)
Surgical approach			0.812
Right	91 (65.9%)	112 (64.4%)		203 (65.1%)
Left	47 (34.1%)	62 (35.6%)		109 (34.9%)
Anastomic leakage			0.837
No	127 (92.0%)	159 (91.4%)		286 (91.7%)
Yes	11 (8.0%)	15 (8.6%)		26 (8.3%)
Postoperative pain score (NRS*)
Day 1	3.94 ± 1.27	4.01 ± 1.25	0.629	3.98 ± 1.26
Day 2	3.30 ± 1.04	3.41 ± 0.90	0.347	3.36 ± 0.97
Day 3	2.86 ± 0.86	2.98 ± 0.69	0.157	2.93 ± 0.77
Day 4	2.78 ± 0.96	2.76 ± 0.63	0.799	2.77 ± 0.79
Day 5	2.16 ± 0.70	2.26 ± 0.64	0.190	2.21 ± 0.66

^* NRS: Numerical Rating Scale