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. 2011 Feb 21;2011:0813.
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