Comparison 2. Abdominal wall lift without pneumoperitoneum (AWL) versus pneumoperitoneum (PP).

Outcome or subgroup title	No. of studies	No. of participants	Statistical method	Effect size
1 Mortality			Other data	No numeric data
2 Serious adverse events	3		Rate Ratio (Fixed, 95% CI)	1.73 [0.35, 8.61]
3 Proportion of patients with serious adverse events	6	343	Risk Ratio (M‐H, Fixed, 95% CI)	2.01 [0.52, 7.80]
4 Conversion to open cholecystectomy	11	460	Risk Ratio (M‐H, Fixed, 95% CI)	0.76 [0.26, 2.21]
5 Operating time	16	649	Mean Difference (IV, Fixed, 95% CI)	6.87 [4.74, 9.00]
6 Operating time (trials that could not be included for the meta‐analysis)			Other data	No numeric data
7 Proportion discharged as day‐patient laparoscopic cholecystectomy	2	62	Risk Ratio (M‐H, Fixed, 95% CI)	1.67 [0.85, 3.26]