Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

117 questions · 117 findings · 11 reviews

No studies found 42 · 35.9%GRADE not reported 7 · 6%Very low 39 · 33.3%Low 19 · 16.2%Moderate 9 · 7.7%High 1 · 0.9%

Biofeedback vs usual care

Adverse events post‐intervention ‐ not reported · patients with fibromyalgia

The review found no eligible studies for this question.

1 finding from 1 review

Biofeedback vs usual care

All cause attrition post‐intervention Number of people withdrawing from the study before completing the intervention · patients with fibromyalgia

It is very uncertain whether biofeedback changes all cause attrition post‐intervention Number of people withdrawing… compared with usual care (very low certainty).

1 finding from 1 review

Biofeedback plus standard therapy vs sham biofeedback plus standard therapy

Clinical remission or improvement · people with irritable bowel syndrome

It is very uncertain whether biofeedback plus standard therapy changes clinical response (adequate improvement or remission) compared with sham biofeedback plus standard therapy (very low certainty).

1 finding from 1 review