Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

3,092 questions · 3,199 findings · 339 reviews · Headline outcomes only

No studies found 714 · 22.3%GRADE not reported 181 · 5.7%Very low 695 · 21.7%Low 908 · 28.4%Moderate 568 · 17.8%High 133 · 4.2%

Local and systemic reactions after administration of Tetanus Diphtheria acelluar Pertussis vaccine vs saline placebo

Systemic reactions ‐ fever (oral temperature ≥ 38°C) · patients with local and systemic reactions

Local and systemic reactions after administration of Tetanus… showed no clear difference in systemic reactions ‐ fever (oral temperature ≥ 38°C) compared with saline placebo (moderate certainty).

1 finding from 1 review

Maintenance LTRA vs placebo

Number of participants experiencing one or more episode requiring treatment with oral steroids · episodic viral wheeze in children

Maintenance LTRA showed no clear difference in number of participants experiencing one or more episode requiring… compared with placebo (moderate certainty).

1 finding from 1 review

Intermittent LTRA vs placebo

Number of participants experiencing one or more episode requiring treatment with oral steroids · episodic viral wheeze in children

Intermittent LTRA showed no clear difference in number of participants experiencing one or more episode requiring… compared with placebo (moderate certainty).

1 finding from 1 review

Intervention not reported

Live birth or ongoing pregnancy IM vs oral · subfertile women

It is very uncertain whether the intervention changes live birth or ongoing pregnancy IM vs oral (very low certainty).

1 finding from 1 review

Intervention not reported

Live birth or ongoing pregnancy Vaginal/rectal vs oral · subfertile women

The intervention showed no clear difference in live birth or ongoing pregnancy Vaginal/rectal vs oral (low certainty).

1 finding from 1 review

Intervention not reported

OHSS IM vs oral · subfertile women

It is very uncertain whether the intervention changes OHSS IM vs oral (very low certainty).

1 finding from 1 review

Intermittent ICS vs placebo

Exacerbations requiring oral corticosteroids ‐ School‐age children · School‐aged children and adults

Intermittent ICS showed no clear difference in exacerbations requiring oral corticosteroids ‐ School‐age children compared with placebo (low certainty).

1 finding from 1 review

Methotrexate vs placebo

Maintenance of clinical remission · Participants with Crohn's disease in remission

Methotrexate showed no clear difference in proportion of patients maintaining clinical remission (low dose oral… compared with placebo (low certainty).

1 finding from 1 review

Proton pump inhibitors (PPI) vs control

Number of participants with worsening scores in corporal atrophy · people with pre‐malignant lesions

Proton pump inhibitor showed no clear difference in number of participants with worsening scores in corporal atrophy compared with control (low certainty).

1 finding from 1 review