Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

4,734 questions · 15,288 findings · 893 reviews

No studies found 3,864 · 25.3%GRADE not reported 2,222 · 14.5%Very low 3,868 · 25.3%Low 3,280 · 21.5%Moderate 1,676 · 11%High 378 · 2.5%

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N95 respirators vs medical/surgical masks

Viral respiratory illness ‐ laboratory‐confirmed influenza · general population and healthcare workers

N95 respirators showed no clear difference in viral respiratory illness ‐ laboratory‐confirmed influenza compared with medical/surgical masks (moderate certainty).

1 finding from 1 review

High vs low dose pegylated interferon alpha‐2a or alpha‐2b

PEG interferon alpha‐2a · patients on HD with HCV infection

High showed no clear difference in PEG interferon alpha‐2a compared with low dose pegylated interferon alpha‐2a or alpha‐2b (low certainty).

4 findings from 1 review
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High vs low dose pegylated interferon alpha‐2a or alpha‐2b

PEG interferon (alpha‐2b) · patients on HD with HCV infection

High showed no clear difference in PEG interferon alpha‐2b compared with low dose pegylated interferon alpha‐2a or alpha‐2b (low certainty).

2 findings from 1 review

High vs low dose pegylated interferon alpha‐2a or alpha‐2b

PEG interferon (combined) · patients on HD with HCV infection

High showed no clear difference in PEG interferon (combined) compared with low dose pegylated interferon alpha‐2a or alpha‐2b (moderate certainty).

3 findings from 1 review