Comparison 1. Any type of in‐bag morcellation versus uncontained power morcellation.

Outcome or subgroup title	No. of studies	No. of participants	Statistical method	Effect size
1.1 Composite intraoperative complications	2	176	Risk Ratio (M‐H, Random, 95% CI)	Not estimable
1.2 Total operative time	2	176	Mean Difference (IV, Random, 95% CI)	9.93 [‐1.35, 21.20]
1.3 Morcellation operative time	2	176	Mean Difference (IV, Random, 95% CI)	2.59 [0.45, 4.72]
1.4 Ease of morcellation	1		Mean Difference (IV, Random, 95% CI)	Subtotals only
1.5 Postoperative length of stay	2	176	Mean Difference (IV, Random, 95% CI)	0.03 [‐0.42, 0.49]
1.6 Postoperative pain	2	176	Mean Difference (IV, Random, 95% CI)	0.22 [‐0.50, 0.94]
1.7 Conversion to laparotomy	2	176	Risk Ratio (M‐H, Random, 95% CI)	Not estimable
1.8 Postoperative diagnosis of leiomyosarcoma	2	176	Risk Ratio (M‐H, Random, 95% CI)	Not estimable
1.9 Postoperative complications	2	176	Risk Ratio (M‐H, Random, 95% CI)	0.80 [0.16, 4.12]