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What do systematic reviews say?

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Evidence found and GRADE certainty

2,262 questions · 2,405 findings · 248 reviews · Headline outcomes only

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No studies found 507 · 21.1%GRADE not reported 93 · 3.9%Very low 657 · 27.3%Low 708 · 29.4%Moderate 387 · 16.1%High 53 · 2.2%

Exercise vs usual care

Adverse effects associated with exercises Exercise programme duration: range 3 to 24 weeks · adults with ankylosing spondylitis

It is very uncertain whether exercise programmes changes adverse effects associated with exercises Exercise programme… compared with usual care (very low certainty).

1 finding from 1 review

Effects of school‐based asthma interventions vs usual care

Asthma symptoms leading to emergency hospital visits (ED visits) · children with asthma

Effects of school‐based asthma interventions may leads to lower asthma symptoms leading to emergency hospital visits (ED visits) compared with usual care (low certainty).

1 finding from 1 review

Effects of school‐based asthma interventions vs usual care

Unplanned visit to hospital or GP due to asthma symptoms (unplanned medical visits) · children with asthma

Effects of school‐based asthma interventions probably leads to lower unplanned visit to hospital or GP due to asthma symptoms (unplanned… compared with usual care (moderate certainty).

1 finding from 1 review

Effects of school‐based asthma interventions vs usual care

Use of reliever therapies, e.g. beta₂‐agonists (reliever therapies) · children with asthma

It is very uncertain whether effects of school‐based asthma interventions changes use of reliever therapies, e.g. beta₂‐agonists (reliever therapies) compared with usual care (very low certainty).

1 finding from 1 review