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What do systematic reviews say?

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Evidence found and GRADE certainty

564 questions · 589 findings · 155 reviews · Headline outcomes only

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No studies found 114 · 19.4%GRADE not reported 15 · 2.5%Very low 179 · 30.4%Low 141 · 23.9%Moderate 110 · 18.7%High 30 · 5.1%

Intervention not reported

Number of patients with at least 30% pain reduction · Patients with fibromyalgia

It is very uncertain whether the intervention changes number of patients with at least 30% pain reduction (very low certainty).

1 finding from 1 review

Intervention not reported

Number of patients with a clinically important global improvement · Patients with fibromyalgia

It is very uncertain whether the intervention changes number of patients with a clinically important global improvement (very low certainty).

1 finding from 1 review

Intervention not reported

Discontinuation due to adverse events · Patients with fibromyalgia

It is very uncertain whether the intervention changes discontinuation due to adverse events (very low certainty).

1 finding from 1 review

Intervention not reported

Serious adverse events · Patients with fibromyalgia

It is very uncertain whether the intervention changes serious adverse events (very low certainty).

1 finding from 1 review

Intervention not reported

Pain‐free response at 2 h · adults with migraine headache ‐ moderate or severe pain
1 finding from 1 review

Intervention not reported

Headache relief at 2 h · adults with migraine headache ‐ moderate or severe pain
1 finding from 1 review

Intervention not reported

Headache relief at 1 h · adults with migraine headache ‐ moderate or severe pain
1 finding from 1 review

Intervention not reported

Sustained pain‐free during the 24 h post dose · adults with migraine headache ‐ moderate or severe pain
1 finding from 1 review

Intervention not reported

Sustained headache relief during the 24 h post dose · adults with migraine headache ‐ moderate or severe pain
1 finding from 1 review

Intervention not reported

At least one AE · adults with migraine headache ‐ moderate or severe pain
1 finding from 1 review

Intervention not reported

Serious AE* · adults with migraine headache ‐ moderate or severe pain
1 finding from 1 review

Intervention not reported

Proportion of women having their first OGTT after giving birth a) Postal reminder to woman and physician b) Postal reminder to woman c) Postal reminder to physician · women with previous gestational diabetes mellitus

The intervention may leads to higher proportion of women having their first OGTT after giving birth a)… (low certainty).

1 finding from 1 review

Intervention not reported

Proportion of women having a blood glucose test other than an OGTT after giving birth: fasting blood glucose a) Postal reminder to woman and physician b) Postal reminder to woman c) Postal reminder to physician · women with previous gestational diabetes mellitus

The intervention may leads to higher proportion of women having a blood glucose test other than an OGTT… (low certainty).

1 finding from 1 review

Intervention not reported

Proportion of women diagnosed with type 2 diabetes or showing impaired glucose tolerance or impaired fasting glucose after giving birth · women with previous gestational diabetes mellitus

The review found no eligible studies for this question.

1 finding from 1 review