Ref (type)	Population	Outcome, Interventions	Results and statistical analysis	Effect size	Favours
Pain
Systematic review	55 women Data from 1 RCT	Proportion of women with cure (defined as disappearance of abdominal pain symptoms and no relapse during 3 cycles of follow-up) 27/35 (77%) with Chinese herbal medicine 0/20 (0%) with heat compression (using a hot-water bottle)	RR 32.08 95% CI 2.06 to 499.18 The review reported that the RCT did not state the method of randomisation or follow-up	Large effect size	Chinese herbal medicine