Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

85 questions · 85 findings · 16 reviews · Airways

No studies found 4 · 4.7%GRADE not reported 4 · 4.7%Very low 4 · 4.7%Low 13 · 15.3%Moderate 42 · 49.4%High 18 · 21.2%

Intervention not reported

Quality of life (Asthma Quality of Life Questionnaire, with 32 items, 0 to 7 points per item) · People with asthma (mostly mild or moderate)
1 finding from 1 review
  • Yoga for asthma 2016 · Cochrane Headline outcomes only
    no estimate extracted
    5 studies · 375 participants
    Moderate

Intervention not reported

Asthma symptoms (different severity scores; change from baseline) · People with asthma (mostly mild or moderate)
1 finding from 1 review
  • Yoga for asthma 2016 · Cochrane Headline outcomes only
    no estimate extracted
    3 studies · 243 participants
    Moderate

Intervention not reported

Asthma control (weekly number of attacks) · People with asthma (mostly mild or moderate)
1 finding from 1 review
  • Yoga for asthma 2016 · Cochrane Headline outcomes only
    no estimate extracted
    2 studies · 226 participants
    Low

Intervention not reported

Forced expiratory volume in one second (change from baseline FEV1 (L)) · People with asthma (mostly mild or moderate)
1 finding from 1 review
  • Yoga for asthma 2016 · Cochrane Headline outcomes only
    no estimate extracted
    7 studies · 340 participants
    Very low

Intervention not reported

Reduced asthma medication usage · People with asthma (mostly mild or moderate)

The intervention may leads to higher reduced asthma medication usage (low certainty).

1 finding from 1 review
  • Yoga for asthma 2016 · Cochrane Headline outcomes only
    RR 5.35 [1.29, 22.11]
    2 studies · 48 participants
    Low

Intervention not reported

Adverse events · People with asthma (mostly mild or moderate)
1 finding from 1 review
  • Yoga for asthma 2016 · Cochrane Headline outcomes only
    no estimate extracted
    3 studies · 108 participants
    Very low

Tiotropium vs ipratropium

Mortality (all‐cause) · chronic obstructive pulmonary disease (COPD). Participants in included studies had an average baseline FEV1 of around 40% predicted and…

Tiotropium showed no clear difference in mortality (all‐cause) compared with ipratropium (moderate certainty).

1 finding from 1 review