Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

4,752 questions · 6,648 findings · 688 reviews

No studies found 1,125 · 16.9%GRADE not reported 670 · 10.1%Very low 1,796 · 27%Low 1,685 · 25.3%Moderate 1,075 · 16.2%High 297 · 4.5%

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Postoperative systemic antibiotics (phenoxymethylpenicillin/penicillin VK, 7-day course), partial or total chemo-mechanical debridement and analgesics vs Matched placebo, partial or total chemo-mechanical debridement and analgesics

Pain at 7 days · Adults with a symptomatic necrotic tooth or localised acute apical abscess (no signs of spreading infection or systemic involvement)

It is very uncertain whether postoperative systemic antibiotics… changes pain at 7 days compared with matched placebo, partial or total chemo-mechanical debridement and… (very low certainty).

1 finding from 1 review

Postoperative systemic antibiotics (phenoxymethylpenicillin/penicillin VK, 7-day course), partial or total chemo-mechanical debridement and analgesics vs Matched placebo, partial or total chemo-mechanical debridement and analgesics

Number of paracetamol (acetaminophen) with codeine tablets required · Adults with a symptomatic necrotic tooth or localised acute apical abscess (no signs of spreading infection or systemic involvement)

Postoperative systemic antibiotics… showed no clear difference in number of paracetamol (acetaminophen) with codeine tablets required compared with matched placebo, partial or total chemo-mechanical debridement and…; GRADE not reported.

1 finding from 1 review

Postoperative systemic antibiotics (phenoxymethylpenicillin/penicillin VK, 7-day course), partial or total chemo-mechanical debridement and analgesics vs Matched placebo, partial or total chemo-mechanical debridement and analgesics

Endodontic flare-up · Adults with a symptomatic necrotic tooth or localised acute apical abscess (no signs of spreading infection or systemic involvement)

Postoperative systemic antibiotics… showed no clear difference in endodontic flare-up compared with matched placebo, partial or total chemo-mechanical debridement and…; GRADE not reported.

1 finding from 1 review

Intervention not reported

Anthropometric measures other than body weight a) BMI b) Waist circumference c) Fat mass · participants living with overweight or obesity
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

Face‐down positioning vs no face‐down positioning or posturing after macular hole surgery

Improved visual acuity (ETDRS chart at 4 metres) · participants with idiopathic macular hole

It is very uncertain whether face‐down positioning or posturing changes improved visual acuity (ETDRS chart at 4 metres) compared with no face‐down positioning or posturing after macular hole surgery (very low certainty).

1 finding from 1 review

Intervention not reported

Breast cancer stage at the time of presentation: defined as the proportion of women with breast cancer diagnosed at early stage (stage 0, I, II) Time of outcome assessment: 3 years to 20 years Method of measurement: CBE · health workers

The intervention may leads to higher breast cancer stage at the time of presentation: defined as the… (low certainty).

1 finding from 1 review

Intervention not reported

Breast cancer stage at the time of presentation: defined as the proportion of women with breast cancer diagnosed at late stage (stage III, IV) Time of outcome assessment: 3 years to 20 years Method of measurement: CBE · health workers

The intervention may leads to lower breast cancer stage at the time of presentation: defined as the… (low certainty).

1 finding from 1 review