Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

1,137 questions · 1,153 findings · 353 reviews · Headline outcomes only

No studies found 383 · 33.2%GRADE not reported 69 · 6%Very low 375 · 32.5%Low 230 · 19.9%Moderate 80 · 6.9%High 16 · 1.4%

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

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

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

Environmental interventions vs no intervention

Adverse events · children (aged 0–6 years)

The review found no eligible studies for this question.

2 findings from 1 review

Surgical interventions (exploration and decompression / external neurolysis, internal neurolysis, neurorrhaphy / direct repair, neuroma excision, anastomosis, autologous or allograft nerve grafting or tubulization) vs conservative interventions

Serious adverse events · Children and adolescents with femoral shaft fractures

Surgical interventions may leads to higher serious adverse events compared with conservative interventions (low certainty).

1 finding from 1 review