Table 3.

Critical care intervention prior to admission

Critical care intervention*	Patients	Mean With 95% CI
Critical care intervention in ED	133/320	41.6% (36.1–47.0)
- Vasopressor or inotrope use	3/320	0.9% (0.2–2.7)
- Invasive monitoring	3/320	0.9% (0.2–2.7)
- Mechanical ventilation	114/320	35.6% (30.4–41.1)
- Cardiac arrest	0/320	0% (0–1.1%)
- Arrhythmias requiring treatment	3/320	0.9% (0.2–2.7)
- RBC transfusion	50/320	15.6% (11.8–20.1)
- FFP transfusion	29/320	9.1% (6.2–12.8)
- rFVIIa	4/320	1.3% (0.3–3.2)
- Interventional angiography	1/320	0.3% (0–1.7)
- Neurosurgical intervention	18/320	5.6% (3.4–8.7)

^*see table 1 for definitions of critical care intervention

RBC: red blood cell; FFP: fresh frozen plasma; rFVIIa: recombinant activated factor VII; CI: confidence interval