Question · asked by 1 review
Vitamin C vs placebo: Health‐related quality of life (HRQL)
- Population
- people with asthma
- Intervention
- Vitamin C
- Comparison
- placebo
- Outcome
- Health‐related quality of life (HRQL)
What each review found
Current versions only| Finding | Effect | Studies | GRADE certainty |
|---|---|---|---|
Summary of findings: Vitamin C supplementation vs placebo Health‐related quality of life (HRQL) · adults and children with asthma Vitamin C for asthma and exercise‐induced bronchoconstriction (2013) · Cochrane Headline outcomes only | no estimate extracted | 1 study · 201 participants | Low |
Findings are shown side by side, never pooled across reviews.
The reviews
| Review | Searched up to | Included studies | AMSTAR 2 |
|---|---|---|---|
| Vitamin C for asthma and exercise‐induced bronchoconstriction 2013 · Cochrane Headline outcomes only | Not reported | Not extracted | Not assessed |
Related questions
The same intervention and outcome, asked in another population or against another comparator.
- Vitamin C vs placebo · adults and children with exercise‐induced bronchoconstriction/asthma · 1 review
How reviews are matched to this question
Reviews word the same question differently. Four decision models (TypeSafe's Jev, Liquid AI's d1-ultra, SubQ Snap and Baseten's Elephant) judged each wording of the population, intervention, comparator and outcome against the others; two wordings count as the same when at least three of them agree and none clearly disagrees, and findings count as this question only when all four elements match. Timing, setting and subgroup never split a question: they are shown on each finding.