Cochrane · systematic review · CD010749
Vitamins C and E for asthma and exercise‐induced bronchoconstriction
Wilkinson, M, Hart, A, Milan, SJ, et al. · Cochrane Database of Systematic Reviews · 2014 · Cochrane Library
AirwaysAMSTAR 2: not assessed
SoF tableOnly the outcomes this review put in its Summary of Findings table are listed (the Cochrane Handbook caps them at about seven per comparison). Its other analyses are not shown here.
Questions
9
current version
GRADE rated
4
No studies
5
Included studies
NR
No studies 5 · 55.6%Ungraded 0 · 0%Very low 0 · 0%Low 3 · 33.3%Moderate 1 · 11.1%High 0 · 0%
Ungraded means an effect was reported without a GRADE rating; it is not a gap. No studies means the review found nothing to answer the question. The six categories are a display order, not a score.
Questions and results
Comparison
Population: participants with asthma
| Outcome | Effect | Evidence | Status / GRADE |
|---|---|---|---|
Health‐related quality of life | no estimate extracted | NR | No studies |
Asthma exacerbation as defined by hospital admission or treatment with a course of oral corticosteroids | no estimate extracted | NR | No studies |
Lung function (FEV1, PEF) | no estimate extracted | 3 studies · 192 participants | Moderate Downgraded: risk of bias |
Symptoms | no estimate extracted | 1 study · 15 participants | Low Downgraded: risk of bias |
Adverse events | no estimate extracted | 1 study · 15 participants | Low Downgraded: risk of bias |
Comparison
Population: participants with exercise‐induced asthma
| Outcome | Effect | Evidence | Status / GRADE |
|---|---|---|---|
Health‐related quality of life | no estimate extracted | NR | No studies |
Asthma exacerbation as defined by hospital admission or treatment with a course of oral corticosteroids | no estimate extracted | NR | No studies |
Lung function (FEV1, PEF) | no estimate extracted | 1 study · 8 participants | Low Downgraded: risk of bias |
Adverse events | no estimate extracted | NR | No studies |