Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

901 questions · 1,073 findings · 138 reviews

No studies found 166 · 15.5%GRADE not reported 310 · 28.9%Very low 213 · 19.9%Low 227 · 21.2%Moderate 132 · 12.3%High 25 · 2.3%

High vs standard volume of fortified human milk or preterm formula

Extrauterine growth restriction at discharge · preterm or low birth weight infants

High showed no clear difference in extrauterine growth restriction at discharge compared with standard volume of fortified human milk or preterm formula (low certainty).

1 finding from 1 review

High vs standard volume of fortified human milk or preterm formula

Necrotising enterocolitis · preterm or low birth weight infants

It is very uncertain whether high changes necrotising enterocolitis compared with standard volume of fortified human milk or preterm formula (very low 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

High vs low stimulation

50% or greater reduction in seizure frequency · people with focal seizures

High probably leads to higher 50% reduction in seizure frequency (responders) compared with low stimulation (moderate certainty).

1 finding from 1 review

High vs low stimulation

Voice Alteration or Hoarseness · people with focal seizures

High probably leads to higher voice alteration or hoarseness compared with low stimulation (moderate certainty).

1 finding from 1 review