Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

31 questions · 31 findings · 10 reviews · Headline outcomes only

No studies found 20 · 64.5%GRADE not reported 0 · 0%Very low 7 · 22.6%Low 3 · 9.7%Moderate 1 · 3.2%High 0 · 0%

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 (number) ‐ pegylated interferon‐alpha plus… compared with no intervention or control intervention (control) (very low certainty).

1 finding from 1 review

Multi‐component intervention vs other treatments/routine care

Number of participants experiencing any serious adverse events · the management of chronic obstructive pulmonary disease

Multi‐component intervention showed no clear difference in adverse events: number of people experiencing a serious adverse event compared with other intervention or routine, usual care or control treatment (low certainty).

1 finding from 1 review

Multi‐component intervention vs control

Adverse events: number of people experiencing adverse events (all cause or COPD‐related), serious adverse events, mortality · COPD

Multi‐component intervention showed no clear difference in adverse events: number of people experiencing adverse events (all… compared with control (low certainty).

1 finding from 1 review

Single component intervention vs control

Adverse events: number of people experiencing adverse events (all cause or COPD‐related), serious adverse events, mortality · COPD

It is very uncertain whether single component intervention changes adverse events: number of people experiencing adverse events (all… compared with control (very low certainty).

1 finding from 1 review

Thiazolidinediones vs no intervention

Serious adverse events (number of events) · people with non‐alcohol‐related fatty liver disease (NAFLD)

It is very uncertain whether thiazolidinediones changes serious adverse events (number of events) compared with no intervention (very low certainty).

1 finding from 1 review