Outcome	Adults (95% CI)	Children (95% CI)	Overall (95% CI)
Wound infection	OR = 0.38 (0.27 to 0.54)	NS	OR = 0.38 (0.28 to 0.53)
Intra-abdominal abscess	NS	NS	NS
Postoperative complication	OR = 0.62 (0.4 to 0.96)	NS	OR = 0.64 (0.44 to 0.93)
Reoperation	NS	NS	NS
Operation time	WMD = 10.49 (5.05 to 15.92)	WMD = 16.91 (11.96 to 21.86)	WMD = 11.59 (6.65 to 16.53)
Postoperative stay	MD = −0.78 (−1.38 to −0.17)	NS	MD = −0.79 (−1.35 to −0.23)
Return to activity	MD = −3.93 (−6.15 to −1.7)	NS	MD = −5.45 (−8.98 to −1.91)