Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

4,667 questions · 21,760 findings · 2,177 reviews

No studies found 4,173 · 19.2%GRADE not reported 2,300 · 10.6%Very low 5,276 · 24.2%Low 5,764 · 26.5%Moderate 3,298 · 15.2%High 949 · 4.4%

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SDF (given at a particular frequency, concentration, or duration) vs SDF (given at a different frequency, concentration, or duration)

Adverse effects · Children and adults (with or without carious lesions)
1 finding from 1 review

Intervention not reported

Serious adverse eventsClinical manifestation and laboratory examination · people with acute herpes zoster (within 7 days of onset of rash)

It is very uncertain whether the intervention changes serious adverse eventsClinical manifestation and laboratory… (very low certainty).

1 finding from 1 review

Intervention not reported

Non‐serious adverse eventsClinical manifestation and laboratory examination · people with acute herpes zoster (within 7 days of onset of rash)

The intervention showed no clear difference in non‐serious adverse eventsClinical manifestation and laboratory… (low certainty).

1 finding from 1 review

Hand hygiene vs control

Composite of acute respiratory illness, influenza‐like illness, laboratory‐confirmed influenza · general population and healthcare workers

Hand hygiene may leads to lower composite of acute respiratory illness, influenza‐like illness,… compared with control (low certainty).

1 finding from 1 review

Medical/surgical masks vs no masks

Viral respiratory illness ‐ laboratory‐confirmed influenza/SARS‐CoV‐2 · general population

Medical/surgical masks showed no clear difference in viral respiratory illness ‐ laboratory‐confirmed influenza/SARS‐CoV‐2 compared with no masks (moderate certainty).

1 finding from 1 review