Comparison 11. Balloon (second generation) versus TCRE (first generation).

Outcome or subgroup title	No. of studies	No. of participants	Statistical method	Effect size
1 Bleeding	1		Risk Ratio (M‐H, Fixed, 95% CI)	Subtotals only
1.1 Amenorrhoea at 6 months' follow‐up	1	49	Risk Ratio (M‐H, Fixed, 95% CI)	0.95 [0.31, 2.93]
1.2 Amenorrhoea at 12 months' follow‐up	1	45	Risk Ratio (M‐H, Fixed, 95% CI)	1.21 [0.50, 2.95]
2 Rate of satisfaction	2		Risk Ratio (M‐H, Fixed, 95% CI)	Subtotals only
2.1 At 6 months' follow‐up	1	50	Risk Ratio (M‐H, Fixed, 95% CI)	1.06 [0.93, 1.20]
2.2 At 12 months' follow‐up	2	122	Risk Ratio (M‐H, Fixed, 95% CI)	1.06 [0.96, 1.18]
2.3 At 2 years' follow‐up	1	68	Risk Ratio (M‐H, Fixed, 95% CI)	1.35 [1.06, 1.72]
3 Duration of operation (minutes)	1	82	Mean Difference (IV, Fixed, 95% CI)	‐13.0 [‐15.20, ‐10.80]
4 Duration of operation (minutes)			Other data	No numeric data
5 Operative difficulties	1	51	Risk Ratio (M‐H, Fixed, 95% CI)	7.22 [0.42, 123.83]
5.1 Equipment failure	1	51	Risk Ratio (M‐H, Fixed, 95% CI)	7.22 [0.42, 123.83]
6 Postoperative pain (continuous data)	1	82	Mean Difference (IV, Fixed, 95% CI)	‐0.60 [‐0.88, ‐0.32]
7 Postoperative pain (descriptive data)			Other data	No numeric data
8 Hospital stay (days)	1	82	Mean Difference (IV, Fixed, 95% CI)	‐0.30 [‐0.52, ‐0.08]
9 Duration of hospital stay (hours)			Other data	No numeric data
10 Return to normal activities (days)	1	82	Mean Difference (IV, Fixed, 95% CI)	‐2.10 [‐3.38, ‐0.82]
11 Return to normal activities (days)			Other data	No numeric data
12 Complication rate: major complications	1		Risk Ratio (M‐H, Fixed, 95% CI)	Subtotals only
12.1 Fluid overload	1	82	Risk Ratio (M‐H, Fixed, 95% CI)	0.10 [0.01, 1.67]
12.2 Cervical tear	1	82	Risk Ratio (M‐H, Fixed, 95% CI)	0.35 [0.01, 8.34]
12.3 Conversion to hysterectomy	1	88	Risk Ratio (M‐H, Fixed, 95% CI)	0.24 [0.01, 4.84]
12.4 Blood transfusion	1	82	Risk Ratio (M‐H, Fixed, 95% CI)	5.24 [0.26, 105.97]
13 Complication rate: minor complications	1	82	Mean Difference (IV, Fixed, 95% CI)	‐81.8 [‐93.33, ‐70.27]
13.1 Blood loss	1	82	Mean Difference (IV, Fixed, 95% CI)	‐81.8 [‐93.33, ‐70.27]
14 Complication rate: minor complications (dichotomous)	1		Risk Ratio (M‐H, Fixed, 95% CI)	Subtotals only
14.1 Fever	1	82	Risk Ratio (M‐H, Fixed, 95% CI)	0.53 [0.05, 5.57]
14.2 Urinary infection or retention	1	82	Risk Ratio (M‐H, Fixed, 95% CI)	0.35 [0.01, 8.34]
14.3 Haemorrhage	1	82	Risk Ratio (M‐H, Fixed, 95% CI)	1.31 [0.38, 4.54]
15 Requirement for further surgery	2		Risk Ratio (M‐H, Fixed, 95% CI)	Subtotals only
15.1 At 12 months' follow‐up (ablation and hysterectomy)	1	75	Risk Ratio (M‐H, Fixed, 95% CI)	0.51 [0.10, 2.64]
15.2 At 2 years' follow‐up (ablation and hysterectomy)	1	68	Risk Ratio (M‐H, Fixed, 95% CI)	0.38 [0.08, 1.81]
15.3 At 12 months' follow‐up (hysterectomy only)	1	45	Risk Ratio (M‐H, Fixed, 95% CI)	0.12 [0.01, 2.44]