Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

1,270 questions · 1,480 findings · 174 reviews

No studies found 252 · 17%GRADE not reported 405 · 27.4%Very low 301 · 20.3%Low 284 · 19.2%Moderate 174 · 11.8%High 64 · 4.3%

Interventions for involving older patients with multi‐morbidity in decision‐making about their health care vs usual care

Participants' evaluation of the intervention · older patients with multi‐morbidity

Interventions for involving older patients with multi‐morbidity in… probably leads to higher patient evaluation of care/the intervention Care related to patient… compared with usual care (moderate certainty).

1 finding from 1 review

Inactivated influenza vaccine vs placebo or no intervention

Nausea or vomiting assessed by subjective report Timing of assessment: single influenza season · healthy adults

Inactivated parenteral influenza vaccine showed no clear difference in nausea or vomiting assessed by subjective report Timing of… compared with placebo or 'do nothing' (low certainty).

1 finding from 1 review

Intervention not reported

3,4‐DAP (20 mg, single dose) versus placebo. Assessments made 30 minutes after taking the drug or placebo · people with acquired nystagmus
1 finding from 1 review

Intervention not reported

4‐AP (10 mg, single dose) versus 3,4‐DAP (10 mg, single dose) Assessments made at 45 and 90 minutes after taking the drug · people with acquired nystagmus
1 finding from 1 review

Chromoscopy vs conventional colonoscopy

Number of participants with 3 or more adenomas (in studies with single intubation) · people undergoing colonoscopy for the detection of polyps

Chromoscopy may leads to higher number of participants with 3 or more adenomas (in studies with… compared with conventional colonoscopy (low certainty).

1 finding from 1 review

Intervention not reported

Knowledge [scored correct answer to single question, 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 knowledge [scored correct answer to single question, measured… (low certainty).

1 finding from 1 review

Intervention not reported

Satisfaction with the information provided [single question, 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 may leads to higher satisfaction with the information provided [single question,… (low certainty).

1 finding from 1 review

Intervention not reported

Satisfaction with the information provided (Single and multi‐component intervention) · People with a health condition or nominally 'well' considering real clinical trial participation (across a range of topic areas)

The review found no eligible studies for this question.

1 finding from 1 review