Enhanced recovery after surgery, based perioperative bundle reduces 30-day unplanned readmission after laparoscopic colorectal cancer surgery

Table 1 Comparison of general information between two groups, n (%)/mean ± SD

Item	Control group (n = 38)	Intervention group (n = 39)	Test statistic	P value
Age (years)	62.4 ± 11.8	61.7 ± 12.3	t = 0.257	0.798
Gender			χ² = 0.041	0.84
Male	22 (57.9)	23 (59.0)
Female	16 (42.1)	16 (41.0)
BMI (kg/m2)	23.1 ± 3.2	22.8 ± 3.4	t = 0.403	0.688
Smoking history	14 (36.8)	13 (33.3)	χ² = 0.102	0.749
Drinking history	11 (28.9)	12 (30.8)	χ² = 0.032	0.858
Tumor location			χ² = 0.267	0.875
Colon cancer	23 (60.5)	25 (64.1)
Rectal cancer	15 (39.5)	14 (35.9)
TNM staging			χ² = 1.247	0.536
Stage I	8 (21.1)	6 (15.4)
Stage II	17 (44.7)	20 (51.3)
Stage III	13 (34.2)	13 (33.3)
Preoperative CEA (ng/mL)	8.7 ± 12.4	9.2 ± 13.1	t = -0.173	0.863
Comorbidities
Hypertension	15 (39.5)	16 (41.0)	χ² = 0.019	0.89
Diabetes	9 (23.7)	8 (20.5)	χ² = 0.116	0.733
Coronary heart disease	5 (13.2)	4 (10.3)	χ² = 0.158	0.691
ASA classification			χ² = 0.412	0.814
Grade I	12 (31.6)	14 (35.9)
Grade II	21 (55.3)	20 (51.3)
Grade III	5 (13.2)	5 (12.8)

ASA: American Society of Anesthesiologists; CEA: Carcinoembryonic antigen; BMI: Body mass index.