Findings

What do systematic reviews say?

2,234 questions · 2,325 findings · 216 reviews · Airways

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No studies found 249 · 10.7%GRADE not reported 107 · 4.6%Very low 276 · 11.9%Low 751 · 32.3%Moderate 718 · 30.9%High 224 · 9.6%

Intervention not reported

Asthma symptoms measured using various techniques. · patients with asthma aged eight years or older

1 finding from 1 review

Physical training for asthma 2013 · Cochrane Headline outcomes only
no estimate extracted
9 studies · 315 participants
Very low

Intervention not reported

Quality of life Measured using various scales. · patients with asthma aged eight years or older

1 finding from 1 review

Physical training for asthma 2013 · Cochrane Headline outcomes only
no estimate extracted
5 studies · 212 participants
Very low

Intervention not reported

Exercise tolerance Measured using 6MWD · patients with asthma aged eight years or older

1 finding from 1 review

Physical training for asthma 2013 · Cochrane Headline outcomes only
no estimate extracted
1 study · 34 participants
Low

Intervention not reported

PEFR L/min · patients with asthma aged eight years or older

1 finding from 1 review

Physical training for asthma 2013 · Cochrane Headline outcomes only
no estimate extracted
2 studies · 77 participants
Very low

Intervention not reported

VEmax · patients with asthma aged eight years or older

1 finding from 1 review

Physical training for asthma 2013 · Cochrane Headline outcomes only
no estimate extracted
5 studies · 200 participants
Low

Intervention not reported

VOmax · patients with asthma aged eight years or older

1 finding from 1 review

Physical training for asthma 2013 · Cochrane Headline outcomes only
no estimate extracted
8 studies · 267 participants
Low

Intervention not reported

HRmax bpm · patients with asthma aged eight years or older

1 finding from 1 review

Physical training for asthma 2013 · Cochrane Headline outcomes only
no estimate extracted
2 studies · 34 participants
Low

MHRV vs placebo

Change in Morning PEF after 12 months (% predicted) · asthmatics with sensitivity to house dust mite

MHRV showed no clear difference in change in Morning PEF after 12 months (% predicted) compared with placebo (moderate certainty).

1 finding from 1 review

Dehumidifiers for chronic asthma 2013 · Cochrane Headline outcomes only
MD 13.59
1 study · 100 participants
Moderate

MHRV vs placebo

Change in Evening PEF after 12 months (% predicted) · asthmatics with sensitivity to house dust mite

MHRV probably leads to higher change in Evening PEF after 12 months (% predicted) compared with placebo (moderate certainty).

1 finding from 1 review

Dehumidifiers for chronic asthma 2013 · Cochrane Headline outcomes only
MD 24.56 [8.97, 40.15]
1 study · 100 participants
Moderate

MHRV vs placebo

FEV1 · asthmatics with sensitivity to house dust mite

MHRV showed no clear difference in change in FEV1 after 12 months (% predicted) compared with placebo (moderate certainty).

1 finding from 1 review

Dehumidifiers for chronic asthma 2013 · Cochrane Headline outcomes only
MD 1.32
1 study · 100 participants
Moderate

MHRV vs placebo

SGRQ Total SGRQ (Total) Score. Scale from: 0 to 100. Lower score indicates better quality of life. · asthmatics with sensitivity to house dust mite

MHRV showed no clear difference in quality of life SGRQ Scale from 0 to 100 (0 on the scale is better) compared with placebo (moderate certainty).

1 finding from 1 review

Dehumidifiers for chronic asthma 2013 · Cochrane Headline outcomes only
no estimate extracted
1 study · 100 participants
Moderate

MHRV vs placebo

Mean exacerbations requiring a course of oral corticosteroids · asthmatics with sensitivity to house dust mite

MHRV showed no clear difference in exacerbations needing oral steroids compared with placebo (moderate certainty).

1 finding from 1 review

Dehumidifiers for chronic asthma 2013 · Cochrane Headline outcomes only
OR 0.52 [0.22, 1.24]
1 study · 100 participants
Moderate

MHRV vs placebo

Exacerbations leading to ED visits · asthmatics with sensitivity to house dust mite

MHRV showed no clear difference in exacerbations needing ED visit compared with placebo (moderate certainty).

1 finding from 1 review

Dehumidifiers for chronic asthma 2013 · Cochrane Headline outcomes only
OR 1.84 [0.32, 10.52]
1 study · 100 participants
Moderate

MHRV vs placebo

Exacerbations needing hospitalisation · asthmatics with sensitivity to house dust mite

MHRV showed no clear difference in exacerbations needing hospitalisation compared with placebo (moderate certainty).

1 finding from 1 review

Dehumidifiers for chronic asthma 2013 · Cochrane Headline outcomes only
OR 0.09 [0, 1.72]
1 study · 100 participants
Moderate

Beta2‐agonists vs placebo (single administration)

Maximal percentage fall in FEV1 · exercise‐induced asthma

1 finding from 1 review

Beta₂‐agonists for exercise‐induced asthma 2013 · Cochrane Headline outcomes only
no estimate extracted
72 studies · 799 participants
Moderate

Beta2‐agonists vs placebo (single administration)

Number of participants with an FEV1 fall > 10% · exercise‐induced asthma

Beta2‐agonists probably leads to lower number of participants with an FEV1 fall > 10% compared with placebo (single administration) (moderate certainty).

1 finding from 1 review

Beta₂‐agonists for exercise‐induced asthma 2013 · Cochrane Headline outcomes only
OR 0.08 [0.06, 0.13]
19 studies · 773 participants
Moderate

Beta2‐agonists vs placebo (single administration)

Maximal percentage fall in PEF · exercise‐induced asthma

1 finding from 1 review

Beta₂‐agonists for exercise‐induced asthma 2013 · Cochrane Headline outcomes only
no estimate extracted
14 studies · 92 participants
Low

Beta2‐agonists vs placebo (single administration)

Maximal percentage fall in FEF25‐75% · exercise‐induced asthma

1 finding from 1 review

Beta₂‐agonists for exercise‐induced asthma 2013 · Cochrane Headline outcomes only
no estimate extracted
8 studies · 106 participants
Low

Beta2‐agonists vs placebo (single administration)

Side effects · exercise‐induced asthma

Beta2‐agonists showed no clear difference in side effects compared with placebo (single administration) (low certainty).

1 finding from 1 review

Beta₂‐agonists for exercise‐induced asthma 2013 · Cochrane Headline outcomes only
OR 0.83 [0.43, 1.59]
55 studies · 2165 participants
Low

Inspiratory muscle training vs control

Inspiratory muscle strength · people with asthma

1 finding from 1 review

Inspiratory muscle training for asthma 2013 · Cochrane Headline outcomes only
no estimate extracted
4 studies · 84 participants
Low