Effect of screening colonoscopy frequency on colorectal cancer mortality in patients with a family history of colorectal cancer

Table 4 Comparison of perioperative-related indicators between the two groups

	Laparoscopic colectomy group, (n = 63)	Open colectomy group, (n = 41)	χ2, t, or Z value	P value
Preoperative comorbidities, n (%)
Anemia	25 (39.7)	7 (17.1)	5.960	0.015a
Intestinal obstruction	12 (19)	5 (12.2)	0.853	0.356
Hypoproteinemia	17 (27)	7 (17.1)	1.374	0.241
High blood pressure	20 (31.7)	12 (29.3)	0.072	0.789
Diabetes	7 (11.1)	4 (9.8)	0.048	0.826
Pneumonia or bronchitis	8 (12.7)	8 (19.5)	0.886	0.347
Viral hepatitis	6 (9.5)	1 (2.4)	1.986	0.159
History of digestive disease, n (%)	5 (7.9)	5 (12.2)	0.518	0.472
Average operation time (min)	175.2 ± 43.8	171.9 ± 58.8	0.325	0.746
Intraoperative bleeding (mL)	80.4 ± 60.6	169.4 ± 95.1	5.325	0.000a
Postoperative hospital stay (d)	12.9 ± 3.7	13.7 ± 6.7	0.837	0.405
Time to first ambulation (d)	2.8 ± 2.1	5.1 ± 2.2	5.243	0.000a
Time to first liquid meal (d)	3.7 ± 1.9	5.0 ± 2.1	3.142	0.002a
Time to first exhaust (d)	3.3 ± 1.3	3.9 ± 1.5	1.960	0.053
Postoperative complications, n (%)	6 (9.5)	9 (22.0)	3.108	0.078
Bleeding from the anastomosis	1	2
Anastomotic fistula	1	0
Postoperative intestinal obstruction	1	3
Infection of the incision	0	1
Abdominal infection	0	1
Diarrhea	3	1
Postoperative urinary retention	0	1

^aP < 0.05 represents a significant difference between the two groups.