Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

4,710 questions · 14,842 findings · 1,394 reviews

No studies found 2,880 · 19.4%GRADE not reported 1,413 · 9.5%Very low 3,103 · 20.9%Low 3,870 · 26.1%Moderate 2,663 · 17.9%High 913 · 6.2%

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Antibiotics vs placebo

Vomiting, diarrhoea or rash · children with acute otitis media

Antibiotics leads to higher vomiting, diarrhoea or rash compared with placebo (high certainty).

1 finding from 1 review

Antibiotics vs placebo

Abnormal tympanometry ‐ 2 to 4 weeks · children with acute otitis media

Antibiotics leads to lower abnormal tympanometry ‐ 2 to 4 weeks compared with placebo (high certainty).

1 finding from 1 review

Antibiotics vs placebo

Abnormal tympanometry ‐ 3 months · children with acute otitis media

Antibiotics showed no clear difference in abnormal tympanometry ‐ 3 months compared with placebo (high certainty).

1 finding from 1 review

Antioxidant multivitamin and mineral supplement vs placebo or no treatment

Progression to late AMD (neovascular AMD, geographic atrophy or both) · people with AMD

Antioxidant multivitamin and mineral supplement probably leads to lower progression to late AMD (neovascular AMD, geographic atrophy, or both) compared with placebo or no treatment (moderate certainty).

1 finding from 1 review

Lutein with or without zeaxanthin vs placebo

Progression to visual loss (loss of 3 or more lines on logMAR chart) · people with AMD

Lutein with or without zeaxanthin showed no clear difference in progression to visual loss (loss of 3 or more lines on logMAR chart) compared with placebo (low certainty).

1 finding from 1 review

Antioxidant multivitamin and mineral supplement vs placebo or no treatment

Progression to neovascular AMD · people with AMD

Antioxidant multivitamin and mineral supplement probably leads to lower progression to neovascular AMD compared with placebo or no treatment (moderate certainty).

1 finding from 1 review