Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

294 questions · 308 findings · 41 reviews

No studies found 65 · 21.1%GRADE not reported 21 · 6.8%Very low 83 · 26.9%Low 66 · 21.4%Moderate 47 · 15.3%High 26 · 8.4%

Antibiotics vs placebo

Treatment incompletion (RR < 1 favored) · Participants with acute bacterial conjunctivitis

Antibiotics probably leads to lower treatment incompletion (RR < 1 favored) compared with placebo (moderate certainty).

1 finding from 1 review

Antibiotics vs placebo

Persistent clinical infection after one course of treatment (RR < 1 favored) · Participants with acute bacterial conjunctivitis

Antibiotics probably leads to lower persistent clinical infection after one course of treatment (RR < 1… compared with placebo (moderate certainty).

1 finding from 1 review

Antibiotics vs placebo

Treatment‐associated ocular complications (RR < 1 or RD ≤ 0 favored) · Participants with acute bacterial conjunctivitis

It is very uncertain whether antibiotics changes treatment‐associated ocular complications (RR < 1 or RD ≤ 0 favored) compared with placebo (very low certainty).

1 finding from 1 review

Antibiotics vs placebo

Pain ‐ pain at 24 hours · children with acute otitis media

Antibiotics showed no clear difference in pain ‐ pain at 24 hours compared with placebo (high certainty).

1 finding from 1 review

Antibiotics vs placebo

Pain ‐ pain at 2 to 3 days · children with acute otitis media

Antibiotics leads to lower pain ‐ pain at 2 to 3 days compared with placebo (high certainty).

1 finding from 1 review

Antibiotics vs placebo

Pain ‐ pain at 4 to 7 days · children with acute otitis media

Antibiotics showed no clear difference in pain ‐ pain at 4 to 7 days compared with placebo (high certainty).

1 finding from 1 review

Antibiotics vs placebo

Pain ‐ pain at 10 to 12 days · children with acute otitis media

Antibiotics probably leads to lower pain ‐ pain at 10 to 12 days compared with placebo (moderate certainty).

1 finding from 1 review

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

Antibiotics vs placebo

Hearing ‐ return to normal *Ventilation tubes versus laser myringotomy (6 to 12 months ‐ medium‐term) Adjusted for non‐independence of within‐individual measurements Assumed ICC of 0.5 № of participants: 132 (2 RCTs) · children aged 6 months to 12 years with otitis media with effusion (OME)

It is very uncertain whether antibiotics changes hearing ‐ return to normal hearing (as complete improvement in… compared with placebo (very low certainty).

1 finding from 1 review

Antibiotics vs placebo

Presence/persistence of OME · children aged 6 months to 12 years with otitis media with effusion (OME)

It is very uncertain whether antibiotics changes presence/persistence of OME compared with placebo (very low certainty).

1 finding from 1 review

Antibiotics vs placebo

Adverse event: anaphylaxis · children aged 6 months to 12 years with otitis media with effusion (OME)

It is very uncertain whether antibiotics changes adverse event: anaphylaxis compared with placebo (very low certainty).

1 finding from 1 review