Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

196 questions · 200 findings · 52 reviews

No studies found 69 · 34.5%GRADE not reported 24 · 12%Very low 75 · 37.5%Low 27 · 13.5%Moderate 5 · 2.5%High 0 · 0%

Intervention vs no intervention or control intervention (control)

Adverse events (number) ‐ interferon‐beta versus no intervention · people with acute hepatitis C infection

It is very uncertain whether intervention changes adverse events (proportion) ‐ interferon‐beta versus no intervention compared with no intervention or control intervention (control) (very low certainty).

2 findings from 1 review

Pharmacological interventions vs pharmacological intervention

Adverse events ‐ Metformin plus liraglutide vs metformin Nausea Diarrhoea Headache · obese women with subfertility

It is very uncertain whether pharmacological intervention changes adverse events ‐ Metformin plus liraglutide vs metformin Nausea… compared with pharmacological intervention (very low certainty).

1 finding from 1 review

Intervention vs no intervention or control intervention (control)

Adverse events (proportion) ‐ interferon‐alpha versus no intervention · people with acute hepatitis C infection

It is very uncertain whether intervention changes adverse events (proportion) ‐ interferon‐alpha versus no intervention compared with no intervention or control intervention (control) (very low certainty).

1 finding from 1 review

Non‐invasive brain stimulation and pharmacological intervention (combination) vs a pharmacological intervention and sham stimulation or usual care (single)

Adverse events: death ‐ at end of treatment (secondary outcome) · people with depression after stroke

It is very uncertain whether pharmacological intervention and non‐invasive brain stimulation… changes adverse events: death (secondary outcome) compared with a pharmacological intervention and sham stimulation or usual care… (very low certainty).

1 finding from 1 review

Pharmacological interventions vs placebo

acceptability ‐ drop‐outs due to adverse events: post‐intervention · adults with long‐term physical conditions (18 years or older)

It is very uncertain whether pharmacological interventions changes acceptability ‐ drop‐outs due to adverse events: post‐intervention compared with placebo (very low certainty).

1 finding from 1 review

Non‐invasive brain stimulation and pharmacological intervention (combination) vs a pharmacological intervention and sham stimulation or usual care (single)

Adverse events: all ‐ central nervous system events (e.g. headache, seizures) (secondary outcome) · people with depression after stroke

It is very uncertain whether pharmacological intervention and non‐invasive brain stimulation… changes adverse events: all ‐ central nervous system events (e.g. headache,… compared with a pharmacological intervention and sham stimulation or usual care… (very low certainty).

1 finding from 1 review

Non‐invasive brain stimulation and pharmacological intervention (combination) vs a pharmacological intervention and sham stimulation or usual care (single)

Adverse events: all ‐ other events ‐ not listed above (e.g. dysuria, neck pain, eye discomfort) (secondary outcome) · people with depression after stroke

It is very uncertain whether pharmacological intervention and non‐invasive brain stimulation… changes adverse events: all ‐ other events ‐ not listed above (e.g.… compared with a pharmacological intervention and sham stimulation or usual care… (very low certainty).

1 finding from 1 review

Pharmacological interventions vs placebo

Adverse events: death ‐ at end of treatment (secondary outcome) · people with depression after stroke

It is very uncertain whether pharmacological interventions changes adverse events: death (secondary outcome) compared with placebo (very low certainty).

1 finding from 1 review

Pharmacological interventions vs placebo

Gastrointestinal adverse events · people with depression after stroke

It is very uncertain whether pharmacological interventions changes adverse events: all ‐ gastrointestinal effects (e.g. constipation,… compared with placebo (very low certainty).

1 finding from 1 review

Pharmacological interventions vs placebo

Adverse effects (central nervous system) · people with depression after stroke

It is very uncertain whether pharmacological interventions changes adverse events: all ‐ central nervous system events (e.g. confusion,… compared with placebo (very low certainty).

1 finding from 1 review

Pharmacological interventions vs placebo

Adverse events (control ‐ placebo) · young people
3 findings from 1 review

Intervention vs no intervention or control intervention (control)

Serious adverse events (number) ‐ pegylated interferon‐alpha plus ribavirin versus pegylated interferon‐alpha · people with acute hepatitis C infection

It is very uncertain whether intervention changes serious adverse events (proportion) ‐ pegylated interferon‐alpha… compared with no intervention or control intervention (control) (very low certainty).

2 findings from 1 review

Antidepressants vs placebo

Adverse events: death ‐ at end of treatment (Analysis 1.14) · people with stroke

It is very uncertain whether pharmacological interventions (antidepressants) changes adverse events: death ‐ at end of treatment Analysis 1.12 compared with placebo (very low certainty).

1 finding from 1 review