Comparison 3. Acupuncture versus Bifidobacterium.

Outcome or subgroup title	No. of studies	No. of participants	Statistical method	Effect size
1 Symptom severity (responders) (short‐term: up to 3 mons, closest to 8 wks)	2	181	Risk Ratio (M‐H, Random, 95% CI)	1.07 [0.90, 1.27]