Ref (type)	Population	Outcome, Interventions	Results and statistical analysis	Effect size	Favours
Patient satisfaction
Systematic review	Premenopausal women with heavy periods 2 RCTs in this analysis	Satisfaction 6-month follow-up 106/120 (88%) with bipolar radiofrequency electrode 50/61 (81%) with balloon ablation	RR 1.08 95% CI 0.94 to 1.24		Not significant
Systematic review	Premenopausal women with heavy periods 3 RCTs in this analysis	Satisfaction 1-year follow-up 132/143 (92%) with bipolar radiofrequency electrode 74/87 (85%) with balloon ablation	RR 1.10 95% CI 0.99 to 1.22		Not significant
Systematic review	Premenopausal women with heavy periods Data from 1 RCT	Satisfaction 1-year follow-up 109/143 (76%) with microwave ablation 103/135 (76%) with balloon ablation	RR 1.00 95% CI 0.88 to 1.14		Not significant
Systematic review	Premenopausal women with heavy periods Data from 1 RCT	Satisfaction 6-month follow-up 65/76 (85%) with bipolar radiofrequency electrode 44/74 (59%) with hydrothermal ablation	RR 1.44 95% 1.17 to 1.77	Small effect size	bipolar radiofrequency electrode
Systematic review	Premenopausal women with heavy periods Data from 1 RCT	Satisfaction 1-year follow-up 74/75 (99%) with bipolar radiofrequency electrode 63/71 (89%) with hydrothermal ablation	RR 1.11 95% CI 1.02 to 1.21	Small effect size	bipolar radiofrequency electrode
Systematic review	Premenopausal women with heavy periods Data from 1 RCT	Satisfaction 2–5 years follow-up 59/74 (80%) with bipolar radiofrequency electrode 32/65 (49%) with hydrothermal ablation	RR 1.62 95% CI 1.23 to 2.13	Small effect size	bipolar radiofrequency electrode
RCT	104 premenopausal women with heavy menstrual bleeding	Satisfaction 10-year follow-up 56/69 (81%) with bipolar radiofrequency electrode 27/35 (77%) with balloon ablation	RR 1.1 95% CI 0.82 to 1.2		Not significant