Ref (type)	Population	Outcome, Interventions	Results and statistical analysis	Effect size	Favours
Menstrual blood loss
Systematic review	51 women 2 RCTs in this analysis	Menstrual blood loss with oral progestogens with danazol Absolute results not reported	WMD –56 mL 95% CI –96 mL to –15 mL	Effect size not calculated	danazol
Systematic review	54 women 2 RCTs in this analysis	Proportion of women who reported a greater self-assessed menstrual blood loss after treatment 19/28 (68%) with oral progestogens 8/26 (31%) with danazol	RR 2.2 95% CI 1.2 to 4.1 NNH 2 95% CI 1 to 9	Moderate effect size	danazol