Is intraperitoneal isoperistaltic side-to-side anastomosis a safe surgical procedure in radical colon cancer surgery

Table 3 Postoperative characteristics in the intraperitoneal anastomosis and extraperitoneal anastomosis groups before and after matching, mean ± SD

	Before matching, IA (n = 70)	Before matching, EA (n = 266)	Before matching, P value	After matching, IA (n = 63)	After matching, EA (n = 63)	After matching, P value
Exhaust time, days	3.21 ± 1.19	4.79 ± 1.84	< 0.001	3.22 ± 1.24	4.86 ± 1.62	< 0.001
Defecation time, days	6.67 ± 1.59	8.26 ± 2.60	< 0.001	6.70 ± 1.64	8.17 ± 1.72	< 0.001
Eating time, days	4.33 ± 1.61	5.52 ± 1.94	< 0.001	4.38 ± 1.68	5.57 ± 1.71	< 0.001
Peritoneal drainage time, days	8.11 ± 2.72	10.62 ± 7.32	0.003	8.24 ± 2.83	9.95 ± 3.26	0.002
Postoperative hospital stay, days	10.64 ± 4.05	12.13 ± 6.21	0.030	10.92 ± 4.18	11.97 ± 5.31	0.124
Complication, n (%)			0.273			0.660
Yes	13 (18.6)	66 (24.8)		12 (19.0)	14 (22.2)
No	57 (81.4)	200 (75.2)		51 (81.0)	49 (77.8)

IA: Intraperitoneal anastomosis; EA: Extraperitoneal anastomosis.