Table 6.

Odds ratio for 90-day postoperative complications according to diet recommendation periods (unadjusted, adjusted for patient characteristics, adjusted for operation characteristics, and adjusted for both) (OR, odds ratio; CI, confidence interval; BMI, body mass index)

	Unadjusted		Adjusted for patient characteristics		Adjusted for operation characteristics		Adjusted for all variables
	OR (95% CI)	p	OR (95% CI)	p	OR (95% CI)	p	OR (95% CI)	p
Group 1 Group 2 Group 3	1.0 1.12 (0.53, 2.36) 0.81 (0.36, 1.78)	0.77 0.60	1.0 1.10 (0.52, 2.34) 0.82 (0.37, 1.86)	0.77 0.62	1.0 1.23 (0.56, 2.73) 1.11 (0.48, 2.54)	0.61 0.80	1.0 1.23 (0. 55, 2.75) 1.14 (0.49, 2.67)	0.62 0.76
Age ≥ 50 years	-		1.35 (0.67, 2.73)	0.40	-		1.08 (0.52, 2.23)	0.81
BMI ≥ 40	-		1.45 (0.69, 3.05)	0.33	-		1.36 (0.63, 2.94)	0.43
Diabetes mellitus	-		1.75 (0.82, 3.72)	0.15	-		1.57 (0.72, 3.44)	0.26
Sleep apnea	-		1.53 (0.71, 2.91)	0.32	-		1.63 (0.79, 3.38)	0.19
Operative time ≥ 90 min	-		-		2.20 (1.03, 4.72)	0.042	2.02 (0.93, 4.40)	0.076
Hiatus reconstruction	-		-		1.68 (0.70, 3.99)	0.24	1.83 (0.76, 4.40)	0.18
Intraoperative adverse event	-		-		3.31 (0.70, 15.53)	0.13	3.27 (0.67, 15.91)	0.14