Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

335 questions · 340 findings · 46 reviews · Pain, Palliative and Supportive Care

No studies found 66 · 19.4%GRADE not reported 16 · 4.7%Very low 102 · 30%Low 68 · 20%Moderate 59 · 17.4%High 29 · 8.5%

Acupuncture vs sham

Number of participants reporting an adverse event · people with episodic migraine

Acupuncture showed no clear difference in number of participants reporting adverse effects compared with sham interventions (high certainty).

1 finding from 1 review

Acupuncture vs prophylactic drugs

Adverse effects (drop‐outs due to adverse effects4) · people with episodic migraine

Acupuncture probably leads to lower number of participants dropping out due to adverse effects compared with prophylactic drugs (moderate certainty).

1 finding from 1 review

Acupuncture vs prophylactic drugs

Number of participants reporting an adverse event · people with episodic migraine

Acupuncture probably leads to lower number of participants reporting adverse effects compared with prophylactic drugs (moderate certainty).

1 finding from 1 review