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

30‐day mortality4 · individuals with atrial fibrillation who are undergoing cardiac surgery

The intervention showed no clear difference in 30‐day mortality4 (low certainty).

1 finding from 1 review

Motivational interview plus oral health education vs Oral health education

Oral health: Not brushing teeth twice a day · People with serious mental illness (all included participants had schizophrenia); majority aged 18 to 65 years per NIMH 1987, or with…

The review found no eligible studies for this question.

1 finding from 1 review

Root-end resection (with or without root-end filling; surgical retreatment) vs Non-surgical re-treatment (orthograde root canal therapy)

Prevalence of pain - 1 day · People with one or more endodontically treated teeth and a periapical condition requiring retreatment

Root-end resection (with or without root-end filling; surgical… may leads to higher prevalence of pain - 1 day (participants reporting pain) compared with root canal retreatment (non-surgical/orthograde) (low certainty).

1 finding from 1 review

Oral appliance or functional orthopaedic appliance vs placebo or no treatment

Daytime symptom: oral breathing (questionnaire) · Children with obstructive sleep apnoea (aged 15 years or younger)

It is very uncertain whether oral appliance or functional orthopaedic appliance changes daytime symptom: oral breathing (questionnaire) compared with placebo or no treatment (very low certainty).

1 finding from 1 review

Oral appliance or functional orthopaedic appliance vs placebo or no treatment

Daytime symptom: nasal stuffiness (questionnaire) · Children with obstructive sleep apnoea (aged 15 years or younger)

It is very uncertain whether oral appliance or functional orthopaedic appliance changes daytime symptom: nasal stuffiness (questionnaire) compared with placebo or no treatment (very low certainty).

1 finding from 1 review

Oral appliance or functional orthopaedic appliance vs placebo or no treatment

Daytime symptom: school problems (Brouillette questionnaire) · Children with obstructive sleep apnoea (aged 15 years or younger)

It is very uncertain whether oral appliance or functional orthopaedic appliance changes daytime symptom: school problems (Brouillette questionnaire) compared with placebo or no treatment (very low certainty).

1 finding from 1 review

Oral cryotherapy (ice chips, ice-cold water, ice cubes or crushed ice held in the mouth during cancer treatment) vs no intervention or control intervention (control)

Number of days of treatment with opioid analgesics · All patients with cancer who are receiving treatment

The review found no eligible studies for this question.

2 findings from 1 review

Oral cryotherapy (ice chips, ice-cold water, ice cubes or crushed ice held in the mouth during cancer treatment) vs no intervention or control intervention (control)

Number of days in hospital (duration of hospitalisation) · All patients with cancer who are receiving treatment

The review found no eligible studies for this question.

2 findings from 1 review

External cephalic version (ECV) commenced before term vs ECV at term

Death of a baby (stillbirth or neonatal death) report of perinatal death · women with breech presentation before term

External cephalic version (ECV) commenced before term showed no clear difference in perinatal mortality (Stillbirth or neonatal mortality < 7 days) compared with ECV at term (low certainty).

1 finding from 1 review

Rescue high‐frequency jet ventilation vs conventional ventilation

Chronic lung disease · preterm infants with severe pulmonary dysfunction

Rescue high‐frequency jet ventilation showed no clear difference in chronic lung disease at 28 days of birth (CLD 28 days) compared with conventional ventilation (low certainty).

1 finding from 1 review

Beta‐2 agonists vs placebo

Cough · people with acute cough or a clinical diagnosis of acute bronchitis
4 findings from 1 review
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