Safety and efficacy of single-incision laparoscopic surgery for appendectomies: A meta-analysis

Table 1 Main characteristics of the 10 included studies in adults

Ref.	Year	SILS-A (n)	C-LA (n)	Age (yr)		M:F
				SILS-A	C-LA	SILS-A	C-LA
Lee et al[27]	2009	72	108	30.3 ± 16.4	33.6 ± 18.6	24:46	56:52
Cho et al[28]	2011	23	20	44.7	39.2	14:9	11:9
Teoh et al[29]	2011	30	60	32.97 ± 13.31	34.88 ± 11.45	19:11	38:22
Park et al[30]	2012	42	62	23.9 ± 11.9	29.9 ± 12.2	14:28	42:21
Kim et al[31]	2011	17	33	21.0	28.0	1:10	21:12
Vilallonga et al[32]	2012	46	41	34.2 (13.3)	37.7 (13.2)	19:27	22:19
Raakow et al[39]	2011	20	20	27.75 ± 8.26	31.75 ± 9.30	8:12	10:10
Amos et al[40]	2011	27	17	37.74 ± 18.85	33.71 ± 12.50	6:21	6:11
Chow et al[41]	2010	40	33	31.65 ± 15.36	29.85 ± 14.93	18:22	15:18
Kang et al[42]	2010	15	25	35.5 ± 13.2	37.9 ± 14.5	8:07	14:11

SILS-A: Single-incision laparoscopic surgery for appendectomy; C-LA: Conventional laparoscopic appendectomy; M: Male; F: Female.

Table 2 Main characteristics of the six included studies in children

Ref.	Year	SILS-A (n)	C-LA (n)	Age		M:F
				SILS-A	C-LA	SILS-A	C-LA
Perez et al[33]	2012	25	25	8.7 ± 0.6	8.9 ± 0.6	10:15	15:10
Chandler et al[34]	2010	50	45	11.1 ± 3.6	11.7 ± 3.8	26:24	34:11
Mayer et al[35]	2011	8	31	12.3 ± 2.4	12.3 ± 2.4
St Peter et al[36]	2011	180	180	11.1 ± 3.5	11.1 ± 3.3	99:81	92:88
Knott et al[37]	2012	135	139	11.0 ± 3.5	10.9 ± 3.4	72:63	70:69
Kang et al[38]	2011	30	25	9.3 ± 4.0	8.7 ± 3.5	17/13	14/11

SILS-A: Single-incision laparoscopic surgery for appendectomy; C-LA: Conventional laparoscopic appendectomy; M: Male; F: Female.

Table 3 Result of the 10 included studies in adult children

Ref.	Postoperative day (d)		Complications		OR time (min)		Wound infection
	SILS-A	C-LA	SILS-A	C-LA	SILS-A	C-LA	SILS-A	C-LA
Lee et al[27]	2.0 ± 1.4	2.0 ± 1.3	7	12	41.0 ± 13.6	37.1 ± 18.6	4	7
Cho et al[28]			1	0	61.8 ± 23.6	61.1 ± 13.7
Teoh et al[29]			5	5	64.67 ± 26.09	71 ± 21.45	2	4
Park et al[30]	2.6 ± 1.0	2.9 ± 1.9	6	6	51.6 ± 16.8	55.8 ± 15.2	3	2
Kim et al[31]			0	2			0	2
Vilallonga et al[32]			2	0	40.4 ± 17.5	35.0 ± 13.6
Raakow et al[39]	4.12 ± 0.61	4.65 ± 0.98	1	2	48.0 ± 13.2	49.0 ± 19.9	1	1
Amos et al[40]	3.70 ± 2.52	3.82 ± 1.24	0	1	41.37 ±10.19	54.41 ± 21.93	5
Chow et al[41]	1.36 ± 0.95	2.36 ± 2.62	2	3	60.0 ± 15.56	70.2 ± 21.23	2	2
Kang et al[42]	6.8 ± 1.8	6.4 ± 1.6	3	2	62.5 ± 18.7	53.7 ± 11.5	1	1

OR time: Operation time; SILS-A: Single-incision laparoscopic surgery for appendectomy; C-LA: Conventional laparoscopic appendectomy.

Table 4 Result of the ix included studies in children

Ref.	Postoperative day (d)		Complications		OR time (min)		Wound infection		Doses of narcotics
	SILS-A	C-LA	SILS-A	C-LA	SILS-A	C-LA	SILS-A	C-LA	SILS-A	C-LA
Perez et al[33]			1	0	46.8 ± 3.7	34.8 ± 2.5
Chandler et al[34]	1.1 ± 0.4	1.2 ± 0.5	5	0	33.8 ± 9	26.3 ± 7.5	4	0	0.9 ± 0.9	1.4 ± 1.3
Mayer et al[35]	3.63 ± 1.2	3.68 ± 1.3	2	3	68.5 ± 19.9	66.2 ± 19.5			4.75 ± 3.3	7.33 ± 3.0
St Peter et al[36]	0.95 ± 0.3	0.93 ± 0.3	6	3	35.2 ± 14.5	29.8 ± 11.6	6	3	9.6 ± 4.9	8.5 ± 4.3
Knott et al[37]	0.92 ± 0.2	0.94 ± 0.3	2	3	34.0 ± 13.6	29.6 ± 13.6	2	3	5.7 ± 3.5	5.3 ± 3.2
Kang et al[38]	4.0 ± 1.5	3.8 ± 2.0	2	2	46.2 ± 18.5	40.5 ± 15.2	2	1

OR time: Operation time; SILS-A: Single-incision laparoscopic surgery for appendectomy; C-LA: Conventional laparoscopic appendectomy.