Table 5.

Subgroup analysis of postoperative outcomes according to ERAS compliance

Index	Group 1 Compliance  ≥ 80% (n = 144)	Group 2 Compliance  > 65% but < 80% (n = 165)	Group 3 Compliance  ≤ 65% (n = 127)	P1	Group 1 vs. Group 3 P2	Group 1 vs. Group 3 OR (95% CI)
Patients with any Major complications (Clavien-Dindo grade III–IV)	9 (6.25)	14 (8.48)	29 (22.83)	< 0.001	< 0.001	0.225 (0.102–0.497)
Type of major complication
Acute kidney injury	0 (0)	0 (0)	2 (1.57)	0.1042)	0.2192)	1.016 (0.994–1.039)
Acute respiratory distress	0 (0)	1 (0.61)	0 (0)		1.000	–
Cardiopulmonary edema	1 (0.69)	1 (0.61)	1 (0.79)		1.0002)	0.881 (0.055–4.233)
Liver failure	0 (0)	1 (0.61)	2 (1.57)		0.2192)	1.016 (0.994–1.039)
Postoperative hemorrhage	3 (2.08)	3 (1.81)	4 (3.15)		0.8661)	0.654 (0.144–2.981)
Deep vein thrombosis	2 (1.39)	2 (1.21)	3 (2.36)		0.8871)	0.582 (0.096–3.541)
Pulmonary embolism	1 (0.69)	1 (0.61)	1 (0.79)		1.0002)	0.881 (0.055–4.233)
Surgical site infection	1 (0.69)	2 (1.21)	5 (3.94)		0.1631)	0.171 (0.020–1.480)
Pneumonia	4 (2.78)	5 (3.64)	9 (7.09)		0.098	0.375 (0.112–1.249)
Paralytic ileus	0 (0)	0 (0)	3 (2.36)		0.2031)	1.024 (0.997–1.052)
Urinary tract infection	0 (0)	1 (0.61)	1 (0.79)		0.4692)	1.008 (0.992–1.024)
Bile leakage	0 (0)	0 (0)	1 (0.79)		0.4692)	1.008 (0.992–1.024)
Other rehabilitation index
Stay in ICU	3 (2.08)	5 (3.03)	9 (7.09)	1.000	0.833	1.000 (0.020–50.399)
Readmission	2 (1.39)	4 (2.42)	7 (5.51)	1.000	0.1291)	0.241 (0.049–1.184)
Reoperation	1 (0.69)	3 (1.82)	3 (2.36)	1.000	0.5281)	0.289 (0.030–2.814)
Mortality	0 (0)	1 (0.61)	2 (1.57)	1.000	0.2192)	1.016 (0.994–1.039)

Categorical data are described as numbers with percentages.

¹⁾Continuous correction chi square test, ²⁾Fisher's exact test.

OR, odds ratio; ICU, intensive care unit.

P₁ represents the comparison of group 1, group 2 and group 3

P₂ represents the comparison of group 1 and group 3