Ref (type)	Population	Outcome, Interventions	Results and statistical analysis	Effect size	Favours
Amenorrhoea
Systematic review	306 women Data from 1 RCT	Amenorrhoea 1 year 37/160 (23%) with laser ablation 32/146 (22%) with transcervical endometrial resection	OR 1.07 95% CI 0.63 to 1.83 P = 0.80		Not significant
Systematic review	91 women Data from 1 RCT	Amenorrhoea 1 year 17/47 (36%) with vaporising electrode ablation 21/44 (47%) with transcervical endometrial resection	OR 0.62 95% CI 0.27 to 1.44 P = 0.27		Not significant
Systematic review	348 premenopausal women 2 RCTs in this analysis	Amenorrhoea 6 months 38/176 (21.6%) with laser ablation 38/172 (22.1%) with transcervical endometrial resection	OR 0.97 95% CI 0.58 to 1.61 P = 0.90		Not significant
RCT	50 women	Amenorrhoea 2 years 36% with 5-mm rollerball with unmodulated cutting current 7% with 5-mm rollerball with modulated coagulating current Absolute numbers not reported	P = 0.54		Not significant