Tripartite comparison of single-incision and conventional laparoscopy in cholecystectomy: A multicenter trial

Table 2 Surgical data of the three groups

	X-Cone method(n = 100)(No.1 group)	Three-device method(n = 100)(No.2 group)	Conventional method(n = 100)(No.3 group)	P values	Statistical methodsand values
Operative time (min)	56.3 ± 14.0	45.6 ± 12.0	42.1 ± 11.0	0.000 G1 vs G2 0.000 G1 vs G3 0.000 G2 vs G3 0.111	One-Way
					ANOVA F = 36.86
Blood loss1 (mL)	16.4 ± 3.7	17.1 ± 4.5	15.8 ± 4.7	0.089	One-Way ANOVA F = 2.439
Conversion to multiple-incision LC	1	2	0	0.776	Fisher exact test
Complications
Incision contusion	3	4	1	0.543	Fisher exact test
Wound infection	1	1	3	0.625	Fisher exact test
Bile duct injury	0	0	0	1.0	Fisher exact test
Bile leakage	2	2	1	1.0	Fisher exact test
Abdominal infection	0	0	0	1.0	Fisher exact test
Postoperative hospital stay (d)	1.66 ± 0.5	1.69 ± 0.5	1.68 ± 0.4	0.928	One-Way ANOVA F = 0.075
Hospital costs	11658 ± 1435	10406 ± 1246	10036 ± 1154	0.000 G1 vs G2 0.000 G1 vs G3 0.000 G2 vs G3 0.415	One-Way ANOVA F = 52.66

¹Estimated intraoperative blood loss; LC: Laparoscopic cholecystectomy.