Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

86 questions · 86 findings · 9 reviews · Haematology

No studies found 20 · 23.3%GRADE not reported 2 · 2.3%Very low 13 · 15.1%Low 24 · 27.9%Moderate 23 · 26.7%High 4 · 4.7%

Hyperimmune immunoglobulin from human plasma vs saline placebo

Serious adverse events up to day 28 (data available only as a composite of serious adverse events or death up to day 28) · individuals with moderate or severe COVID‐19

Hyperimmune immunoglobulin from human plasma showed no clear difference in serious adverse events up to day 28 (data available only as a… compared with saline placebo (low certainty).

1 finding from 1 review

RBD‐specific polyclonal F(ab') 2 fragments of equine antibodies (EpAbs) vs saline placebo

All‐cause mortality (by day 28) · individuals with moderate or severe COVID‐19

RBD‐specific polyclonal F(ab') 2 fragments of equine antibodies… showed no clear difference in all‐cause mortality (by day 28) compared with saline placebo (low certainty).

1 finding from 1 review

RBD‐specific polyclonal F(ab') 2 fragments of equine antibodies (EpAbs) vs saline placebo

Worsening of clinical status (expressed as new need for IMV, admission to ICU, or death by day 28) · individuals with moderate or severe COVID‐19

RBD‐specific polyclonal F(ab') 2 fragments of equine antibodies… showed no clear difference in worsening of clinical status (expressed as new need for IMV,… compared with saline placebo (low certainty).

1 finding from 1 review

Intervention not reported

All‐cause mortality at day 28 · people with moderate to severe disease (WHO scale 4–9); all trials contributing results to the summary of findings table investigated…

It is very uncertain whether the intervention changes all‐cause mortality at day 28 (very low certainty).

1 finding from 1 review

Intervention not reported

Worsening of clinical status: participants with new need for invasive mechanical ventilation or death at day 28 · people with moderate to severe disease (WHO scale 4–9); all trials contributing results to the summary of findings table investigated…

It is very uncertain whether the intervention changes worsening of clinical status: participants with new need for… (very low certainty).

1 finding from 1 review

Intervention not reported

Improvement of clinical status: participants discharged alive at day 28 · people with moderate to severe disease (WHO scale 4–9); all trials contributing results to the summary of findings table investigated…

The intervention showed no clear difference in improvement of clinical status: participants discharged alive at day… (low certainty).

1 finding from 1 review

Intervention not reported

QoL at longest · people with moderate to severe disease (WHO scale 4–9); all trials contributing results to the summary of findings table investigated…

The review found no eligible studies for this question.

1 finding from 1 review

Intervention not reported

Serious adverse events during the trial period · people with moderate to severe disease (WHO scale 4–9); all trials contributing results to the summary of findings table investigated…

It is very uncertain whether the intervention changes serious adverse events during the trial period (very low certainty).

1 finding from 1 review

Intervention not reported

Any adverse events during the trial period · people with moderate to severe disease (WHO scale 4–9); all trials contributing results to the summary of findings table investigated…

The intervention showed no clear difference in any adverse events during the trial period (low certainty).

1 finding from 1 review

Intervention not reported

Viral clearance at day 7 · people with moderate to severe disease (WHO scale 4–9); all trials contributing results to the summary of findings table investigated…

The intervention showed no clear difference in viral clearance at day 7 (low certainty).

1 finding from 1 review

Bamlanivimab vs placebo

Clinical progression: need for NIV, IMV, ECMO, or renal replacement therapy at day 5 (group 5, 6 or 7) · hospitalised individuals with COVID‐19 (moderate to severe disease)

It is very uncertain whether bamlanivimab changes clinical progression: need for NIV, IMV, ECMO, or renal replacement… compared with placebo (very low certainty).

1 finding from 1 review