Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

224 questions · 224 findings · 23 reviews · Headline outcomes only

No studies found 72 · 32.1%GRADE not reported 12 · 5.4%Very low 66 · 29.5%Low 42 · 18.8%Moderate 21 · 9.4%High 11 · 4.9%

Respiratory muscle training vs breathing exercises

Number of unscheduled hospitalizations for episodes of chest infection or acute exacerbation of chronic respiratory failure within 1 year of randomization · participants with limb‐girdle muscular dystrophy or Becker muscular dystrophy

The review found no eligible studies for this question.

1 finding from 1 review

Hyperbaric oxygen vs air breathing to enhance the effectiveness of radiotherapy

Failure of local tumour control ‐ not reported · People undergoing radiation therapy for head and neck cancer

Hyperbaric oxygen probably leads to lower failure of local tumour control (local control) compared with air breathing to enhance the effectiveness of radiotherapy (moderate certainty).

1 finding from 1 review