Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

3,703 questions · 3,824 findings · 858 reviews

No studies found 573 · 15%GRADE not reported 383 · 10%Very low 993 · 26%Low 1,062 · 27.8%Moderate 614 · 16.1%High 199 · 5.2%

Intervention not reported

Death from bleeding complications (up to 30 days · vascular surgery patients who undergo creation of an anastomosis

The review found no eligible studies for this question.

1 finding from 1 review

Intervention not reported

Postoperative bleeding (up to 30 days · vascular surgery patients who undergo creation of an anastomosis

The intervention showed no clear difference in postoperative bleeding (up to 30 days (low certainty).

1 finding from 1 review

Intervention not reported

Unplanned return to the operating room (up to 30 days · vascular surgery patients who undergo creation of an anastomosis

The intervention showed no clear difference in unplanned return to the operating room (up to 30 days (low certainty).

1 finding from 1 review

L‐arginine vs placebo

Frequency of hospitalization (number of days in hospital) · sickle cell disease

It is very uncertain whether L‐arginine changes frequency of hospitalization (number of days in hospital) compared with placebo (very low certainty).

1 finding from 1 review

Prebiotic vs placebo

Withdrawals due to adverse events · people with histologically confirmed diagnosis of ulcerative colitis in remission

It is very uncertain whether prebiotics changes withdrawals due to adverse events (60 days to 6 months) compared with placebo (very low certainty).

1 finding from 1 review

Prebiotic vs placebo

Withdrawals due to adverse events · people with mild‐to‐moderate disease (Rachmilewitz index) or active disease (SCCAI score of 4 to 10)

It is very uncertain whether prebiotics changes withdrawals due to adverse events (14 days to 2 or 3 months) compared with placebo (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

Favipiravir vs no treatment, supportive treatment, or other antiviral treatment

All‐cause mortality – at 28 to 30 days, or in‐hospital · people with confirmed COVID‐19

It is very uncertain whether favipiravir changes all‐cause mortality – at 28 to 30 days, or in‐hospital compared with no treatment, supportive treatment, or other antiviral treatment (very low certainty).

1 finding from 1 review