Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

1,156 questions · 1,179 findings · 198 reviews · Headline outcomes only

No studies found 250 · 21.2%GRADE not reported 43 · 3.6%Very low 236 · 20%Low 395 · 33.5%Moderate 208 · 17.6%High 47 · 4%

Intervention not reported

Rate of participation [case notes, measured immediately post‐intervention] · people with a health condition or nominally 'well' considering real or hypothetical clinical trial participation in cancer or psychiatric…

The intervention showed no clear difference in rate of participation [case notes, measured immediately… (low certainty).

1 finding from 1 review

Tricyclic antidepressants vs another medication

Treatment response (post‐treatment score on self report and clinician‐rated scales) · somatoform disorders in adults

Tricyclic antidepressants showed no clear difference in treatment response (post‐treatment score on self report and… compared with another medication (low certainty).

1 finding from 1 review