Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

508 questions · 529 findings · 58 reviews

No studies found 191 · 36.1%GRADE not reported 49 · 9.3%Very low 143 · 27%Low 92 · 17.4%Moderate 51 · 9.6%High 3 · 0.6%

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

Clinical improvement: participants discharged from hospital ‐ not reported · individuals with moderate or severe COVID‐19

RBD‐specific polyclonal F(ab') 2 fragments of equine antibodies… showed no clear difference in improvement of clinical status (number of participants discharged… 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

Adverse events: all grades · individuals with moderate or severe COVID‐19

RBD‐specific polyclonal F(ab') 2 fragments of equine antibodies… showed no clear difference in adverse events of any grade (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

Serious adverse events (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 serious adverse events (by day 28) compared with saline placebo (low certainty).

1 finding from 1 review

Hyperimmune immunoglobulin from human plasma vs saline placebo

Worsening of clinical status at day 28 (data only available for clinical status worsened on day 7) · individuals with moderate or severe COVID‐19

It is very uncertain whether hyperimmune immunoglobulin from human plasma changes worsening of clinical status at day 28 (data only available for… compared with saline placebo (very low certainty).

1 finding from 1 review

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

Povidone iodine vs Normal saline

Reduction in level of contamination by particles >5 um (droplets) at <2 m from patient's oral cavity · Dental patients undergoing aerosol-generating procedures (AGPs) and the dental healthcare providers treating them

It is very uncertain whether povidone iodine changes reduction in level of contamination by particles >5 um (droplets) at… compared with saline (very low certainty).

1 finding from 1 review

Chlorhexidine vs Normal saline

Reduction in level of contamination by particles >5 um (droplets) at <2 m from patient's oral cavity · Dental patients undergoing aerosol-generating procedures (AGPs) and the dental healthcare providers treating them

Chlorhexidine (CHX) led to lower reduction in level of contamination by particles >5 um (droplets) at… compared with saline; GRADE not reported.

2 findings from 1 review

Iodine tampon vs Saline irrigation (monoject syringe)

Presence of dry socket · Adults (>18 years) having permanent tooth extraction (predominantly mandibular third molars)
1 finding from 1 review

Tap water vs Normal saline

Reduction in wound size · people with acute and chronic wounds

It is very uncertain whether tap water changes reduction in wound size compared with normal saline (very low certainty).

1 finding from 1 review