Virus vaccines vs placebo: Incidence of the common cold Number of participants with common cold by group
Virus vaccines showed no clear difference in incidence of the common cold Number of participants with common cold… compared with placebo (low certainty).
What each review found
Current versions only| Finding | Effect | Studies | GRADE certainty |
|---|---|---|---|
Virus vaccines vs placebo Incidence of the common cold Number of participants with common cold by group · healthy people Virus vaccines showed no clear difference in incidence of the common cold Number of participants with common cold… compared with placebo (low certainty). Vaccines for the common cold (2017) · Cochrane Headline outcomes onlyearlier version CD002190.PUB5, superseded | RR 0.95 [0.45, 2.02] | 1 study · 2307 participants | Low |
Virus vaccines vs placebo Incidence of the common cold Number of participants with common cold by group · healthy people Virus vaccines showed no clear difference in incidence of the common cold Number of participants with common cold… compared with placebo (low certainty). Vaccines for the common cold (2013) · Cochrane Headline outcomes onlyearlier version CD002190.PUB4, superseded | RR 0.95 [0.45, 2.02] | 1 study · 2307 participants | Low |
Findings are shown side by side, never pooled across reviews.
The reviews
| Review | Searched up to | Included studies | AMSTAR 2 |
|---|---|---|---|
| Vaccines for the common cold 2022 · Cochrane Headline outcomes only | Not reported | list not extracted yet | Not assessed |
Studies behind the findings
None of these reviews ties its included studies to this outcome in the data here. Cochrane reviews and reviews with headline outcomes only do not list their studies yet.
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.