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What do systematic reviews say?

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Evidence found and GRADE certainty

665 questions · 683 findings · 44 reviews · Headline outcomes only

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No studies found 254 · 37.2%GRADE not reported 21 · 3.1%Very low 148 · 21.7%Low 193 · 28.3%Moderate 61 · 8.9%High 6 · 0.9%

Acupuncture vs sham

Adverse events at up to 2 months' · women with PMS

It is very uncertain whether acupuncture changes adverse events at up to 2 months' compared with sham (very low certainty).

1 finding from 1 review

Acupuncture vs sham

Response rate at end of treatment · women with PMS

It is very uncertain whether acupuncture changes response rate at end of treatment compared with sham (very low certainty).

1 finding from 1 review

Acupuncture vs gastrokinetic agents

Proportion of people whose symptoms 'improved' (short term: 4 to 12 weeks) · symptomatic gastroparesis

It is very uncertain whether acupuncture changes proportion of people whose symptoms 'improved' (short term: 4 to 12… compared with gastrokinetic agents (very low certainty).

1 finding from 1 review

Acupuncture vs gastrokinetic agents

Proportion of people whose symptoms 'improved' (long term: more than 12 weeks) · symptomatic gastroparesis

It is very uncertain whether acupuncture changes proportion of people whose symptoms 'improved' (long term: more than… compared with gastrokinetic agents (very low certainty).

1 finding from 1 review

Acupuncture vs non‐gastrokinetic agents

Proportion of people whose symptoms 'improved' (short term: 4 to 12 weeks) · symptomatic gastroparesis

It is very uncertain whether acupuncture changes proportion of people whose symptoms 'improved' (short term: 4 to 12… compared with non‐gastrokinetic agents (very low certainty).

1 finding from 1 review