Single-incision laparoscopic appendectomy vs conventional laparoscopic appendectomy: Systematic review and meta-analysis

Table 2 Study characteristics

Study	Area	Study design	Participants (SILA/CLA)	Mean age, yr (SILA/CLA)	Male:female ratio (SILA/CLA)
Teoh et al[12]	Hong Kong	Multi-center	195 (98/97)	39.2/40.7	58:40/59:38
Lee et al[13]	South Korea	Single-center	229 (116/113)	28.4/28.5	64:52/68:45
Perez et al[14]	United States	Single-center	50 (25/25)	8.7/8.9	10:15/15:10
St Peter et al[15]	United States	Single-center	360 (180/180)	11.1/11.1	99:81/92:88
Sozutek et al[16]	Turkey	Single-center	50 (25/25)	30.6/30.0	12:13/7:18
Frutos et al[17]	Spain	Single-center	184 (91/93)	28.0/31.0	42:49/47:46

SILA: Single-incision laparoscopic appendectomy; CLA: Conventional laparoscopic appendectomy.