Helicopter emergency medical services vs ground emergency medical services: Overall unadjusted mortality
It is very uncertain whether helicopter emergency medical services changes overall unadjusted mortality compared with ground emergency medical services (very low certainty).
What each review found
Include earlier review versions| Finding | Effect | Studies | GRADE certainty |
|---|---|---|---|
Helicopter emergency medical services vs ground emergency medical services Overall unadjusted mortality · adults (age > 15 years) with major trauma (ISS > 15) It is very uncertain whether helicopter emergency medical services changes overall unadjusted mortality compared with ground emergency medical services (very low certainty). Helicopter emergency medical services for adults with major trauma (2015) · Cochrane Headline outcomes only | RR 1.03 [0.85, 1.26] | 376648 participants | Very low |
Findings are shown side by side, never pooled across reviews.
The reviews
| Review | Searched up to | Included studies | AMSTAR 2 |
|---|---|---|---|
| Helicopter emergency medical services for adults with major trauma 2015 · 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.