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Each row is one question a systematic review asked: who, what, compared with what, and which outcome, with the effect it found and how certain that is. Words match anywhere in the field.

Limit to evidence status or GRADE (optional)

125 questions in 24 reviews · Injuries

current versions
No studies 125 · 100%Ungraded 0 · 0%Very low 0 · 0%Low 0 · 0%Moderate 0 · 0%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.

QuestionEffectEvidenceStatus / GRADE
Helicopter emergency medical services vs ground emergency medical services
Quality‐adjusted life years · adults (age > 15 years) with major trauma (ISS > 15)
Helicopter emergency medical services for adults with major trauma (2015) · Cochrane
no estimate extractedNRNo studies
Helicopter emergency medical services vs ground emergency medical services
Disability‐adjusted life years · adults (age > 15 years) with major trauma (ISS > 15)
Helicopter emergency medical services for adults with major trauma (2015) · Cochrane
no estimate extractedNRNo studies
Helicopter emergency medical services vs ground emergency medical services
Adverse events · adults (age > 15 years) with major trauma (ISS > 15)
Helicopter emergency medical services for adults with major trauma (2015) · Cochrane
no estimate extractedNRNo studies
Long‐stored ('older') PRBC (≥ 21 days of storage) vs short‐stored (fresh) PRBC (< 21 days of storage)
Transfusion‐related acute lung injury ‐ not measured · patients requiring blood transfusion (children with malaria and adults with a traumatic injury)
Prolonged storage of packed red blood cells for blood transfusion (2015) · Cochrane
no estimate extractedNRNo studies
Long‐stored ('older') PRBC (≥ 21 days of storage) vs short‐stored (fresh) PRBC (< 21 days of storage)
Postoperative infections ‐ not measured · patients requiring blood transfusion (children with malaria and adults with a traumatic injury)
Prolonged storage of packed red blood cells for blood transfusion (2015) · Cochrane
no estimate extractedNRNo studies
Long‐stored ('older') PRBC (≥ 21 days of storage) vs short‐stored (fresh) PRBC (< 21 days of storage)
Post‐injury coagulopathy ‐ not measured · patients requiring blood transfusion (children with malaria and adults with a traumatic injury)
Prolonged storage of packed red blood cells for blood transfusion (2015) · Cochrane
no estimate extractedNRNo studies
Long‐stored ('older') PRBC (≥ 21 days of storage) vs short‐stored (fresh) PRBC (< 21 days of storage)
Multiple organ failure post‐injury ‐ not measured · patients requiring blood transfusion (children with malaria and adults with a traumatic injury)
Prolonged storage of packed red blood cells for blood transfusion (2015) · Cochrane
no estimate extractedNRNo studies
Long‐stored ('older') PRBC (≥ 21 days of storage) vs short‐stored (fresh) PRBC (< 21 days of storage)
Adverse event (Hyperkalaemia) ‐ not measured · patients requiring blood transfusion (children with malaria and adults with a traumatic injury)
Prolonged storage of packed red blood cells for blood transfusion (2015) · Cochrane
no estimate extractedNRNo studies
Leukoreduced PRBCs vs non‐leukoreduced PRBCs
Non‐infectious complication · Patients receiving RBC transfusion
Leukoreduction for the prevention of adverse reactions from allogeneic blood transfusion (2015) · Cochrane
no estimate extractedNRNo studies
Intervention NR
Self‐reported injuries or medically‐attended injuries · cyclists
Cycling infrastructure for reducing cycling injuries in cyclists (2015) · Cochrane
no estimate extractedNRNo studies
Saphenous vein cutdown vs intraosseous route
Dislodgement of device · trainee paramedics using both methods of gaining parenteral access on cadavers
Comparison of routes for achieving parenteral access with a focus on the management of patients with Ebola… (2015) · Cochrane
no estimate extractedNRNo studies
Saphenous vein cutdown vs intraosseous route
Needlestick injuries · trainee paramedics using both methods of gaining parenteral access on cadavers
Comparison of routes for achieving parenteral access with a focus on the management of patients with Ebola… (2015) · Cochrane
no estimate extractedNRNo studies
Saphenous vein cutdown vs intraosseous route
Volume of fluid inserted · trainee paramedics using both methods of gaining parenteral access on cadavers
Comparison of routes for achieving parenteral access with a focus on the management of patients with Ebola… (2015) · Cochrane
no estimate extractedNRNo studies
Intravenous vs intraosseous route
Needlestick injuries · adults or children requiring fluid delivered by a parenteral route (one study testing insertion and the volume of…
Comparison of routes for achieving parenteral access with a focus on the management of patients with Ebola… (2015) · Cochrane
no estimate extractedNRNo studies
Intravenous vs subcutaneous route
Needlestick injuries · adults or children requiring parenteral access for infusion of fluids or medication
Comparison of routes for achieving parenteral access with a focus on the management of patients with Ebola… (2015) · Cochrane
no estimate extractedNRNo studies
Intervention NR
Completed suicide at the end of active intervention · Post‐secondary undergraduate students
Interventions for primary prevention of suicide in university and other post‐secondary educational settings (2014) · Cochrane
no estimate extractedNRNo studies
Intervention NR
Suicidal ideation at the end of active intervention · Post‐secondary undergraduate students
Interventions for primary prevention of suicide in university and other post‐secondary educational settings (2014) · Cochrane
no estimate extractedNRNo studies
Intervention NR
Attempted suicide at the end of active intervention · Post‐secondary undergraduate students
Interventions for primary prevention of suicide in university and other post‐secondary educational settings (2014) · Cochrane
no estimate extractedNRNo studies
Intervention NR
asteric* denotes studies reporting both speed and crash outcomes.
Speed cameras for the prevention of road traffic injuries and deaths (2010) · Cochrane
no estimate extractedNRNo studies
Intervention NR
Phase 3 ‐ conducted in 1994 on one road in one province Noord‐Brabant. The reduction in crashes found in 1991 had been maintained.
Speed cameras for the prevention of road traffic injuries and deaths (2010) · Cochrane
no estimate extractedNRNo studies
Intervention NR
Phase 1 ‐ General effects ‐ effect of speed camera program on crash rate and severity covering first twelve month post intervention period. Phase 3, 4 and 5, of this 5‐phase study did not have before‐after data, hence only phase 1 and 2 tabled.
Speed cameras for the prevention of road traffic injuries and deaths (2010) · Cochrane
no estimate extractedNRNo studies
Intervention NR
About 25% reduction in crashes to that expected. A significant 11% reduction in number of victims, with an average decrease of 139 daytime traffic crashes requiring an ambulance. A 17% reduction in daytime crash fatalities.
Speed cameras for the prevention of road traffic injuries and deaths (2010) · Cochrane
no estimate extractedNRNo studies
Intervention NR
A 30% reduction in vehicles exceeding the speed limit, and a 43% reduction in vehicles exceeding the speed limit by more than 15 mph. Time over distance cameras were shown to be particularly effective (around 100% reduction) at reducing speeds exc...
Speed cameras for the prevention of road traffic injuries and deaths (2010) · Cochrane
no estimate extractedNRNo studies
Intervention NR
Crash outcomes measured: Killed and seriously injured (KSIs) and personal injury crashes (PICs). Across all sites KSI's decreased by 42%. This equated to about 1700 fewer KSI's per annum at these camera sites. Fixed cameras in both urban (47% redu...
Speed cameras for the prevention of road traffic injuries and deaths (2010) · Cochrane
no estimate extractedNRNo studies
Intervention NR
Having controlled for season and general trends, injury crash outcomes in experimental areas relative to control areas were a net reduction of 11% (p= 0.03) in all crashes and 19% (p=0.002) in injury crashes on open roads across the region associa...
Speed cameras for the prevention of road traffic injuries and deaths (2010) · Cochrane
no estimate extractedNRNo studies