Table 1.

Patient demographics

Year	First author	Number of patients		Age (yr)		Gender				Body mass index (kg/m2)		Operative procedure
		SILC	CLC	SILC	CLC	SILC		CLC		SILC	CLC	SILC		CLC
						Male	Female	Male	Female			Right	Left	Right	Left
2011	Kim SJ	73	106	65	63	-	-	-	-	22.7	25.6	20	26	28	67
2011	McNally ME	27	46	67	73	13	21	13	21	27	26	14	8	35	8
2011	Papaconstantinou HT	26	26	65	66	11	11	11	11	28	28	19	4	19	4
2012	Curro G	10	10	60	59	4	3	4	3	25	26	10	0	10	0
2012	Egi H	10	10	68.5	68	4	4	4	4	22.5	21.9	10	0	10	0
2012	Fujii S	23	23	63.9	65.2	10	13	10	13	21.6	22.9	9	14	9	14
2012	Huscher CG	16	16	70	70	-	-	-	-	-	-	8	8	6	10
2012	Lu CC	27	68	60.26	64.29	16	36	16	36	-	-	8	18	16	45
2012	Poon JT	25	25	67	67	14	18	14	18	23.3	23.6	8	17	9	16
2013	Kwag SJ	24	48	59.5	59	9	18	9	18	24.4	24	0	24	0	48
2013	Mynster T	18	36	70	73	8	16	8	16	24	24	7	11	14	22
2013	Pedraza R	50	50	64.6	66.3	25	27	25	27	27.2	31	33	14	33	14
2013	Yun JA	66	93	61	59	33	55	33	55	23.82	24.23	66	0	93	0
2014	Takemasa I	150	150	64.3	65.5	75	71	75	71	21.7	22.4	69	81	69	81
2014	Lim SW	44	263	63.9	63.8	28	170	28	170	23.7	23.8	11	15	15	82
	Total	589	970	-	-	250	463	250	463	-	-	292	240	366	411

SILC: Single-incision laparoscopic colectomy; CLC: Conventional laparoscopic colectomy.