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Evidence found and GRADE certainty

4,730 questions · 18,059 findings · 1,282 reviews

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No studies found 4,360 · 24.1%GRADE not reported 2,529 · 14%Very low 4,641 · 25.7%Low 4,007 · 22.2%Moderate 2,057 · 11.4%High 465 · 2.6%

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Test‐based attendance vs routine isolation after contact with a SARS‐CoV‐2 positive person

Rates of symptomatic PCR‐positive SARS‐CoV‐2 infection (over 13‐week · school staff

It is very uncertain whether test‐based attendance changes rates of symptomatic PCR‐positive SARS‐CoV‐2 infection (over 13‐week compared with routine isolation after contact with a SARS‐CoV‐2‐positive person (very low certainty).

1 finding from 1 review

Test‐based attendance vs routine isolation after contact with a SARS‐CoV‐2 positive person

Confirmed SARS‐CoV‐2 infection · school staff

It is very uncertain whether test‐based attendance changes rates of any PCR‐positive SARS‐CoV‐2 infection (over 13‐week compared with routine isolation after contact with a SARS‐CoV‐2‐positive person (very low certainty).

1 finding from 1 review

Test‐based attendance vs routine isolation after contact with a SARS‐CoV‐2 positive person

COVID‐related absenteeism from work Days absent per 1000 working days (over 13‐week · school staff

Test‐based attendance showed no clear difference in COVID‐related absenteeism from work Days absent per 1000 working… compared with routine isolation after contact with a SARS‐CoV‐2‐positive person (low certainty).

1 finding from 1 review

Summary of findings table ‐ High sodium dialysate vs standard sodium dialysate

Dialysis dysequilibrium syndrome · patients requiring haemodialysis

It is very uncertain whether summary of findings table ‐ High sodium dialysate changes dialysis dysequilibrium syndrome compared with standard sodium dialysate (very low certainty).

1 finding from 1 review

Summary of findings table ‐ High sodium dialysate vs standard sodium dialysate

Severe dialysis dysequilibrium syndrome · patients requiring haemodialysis

It is very uncertain whether summary of findings table ‐ High sodium dialysate changes severe dialysis dysequilibrium syndrome compared with standard sodium dialysate (very low certainty).

1 finding from 1 review