Table 4.

Critical care interventions

Critical care intervention*	Patients	% (95% CI)
Mechanical ventilation	137/432	32% (95%CI 27–36)
RBC transfusion	68/432	16% (95%CI 12–20)
FFP transfusion	44/432	10% (95%CI 7.5–13)
Neurosurgical intervention	31/432	7.2% (95%CI 4.9–10)
Invasive monitoring	6/432	1.4% (95%CI 0.51–3.0)
Arrhythmias requiring treatment	4/432	0.93% (95%CI 0.25–2.4)
Vasopressor or inotrope use	3/432	0.69% (95%CI 0.14–0.20)
Interventional angiography	1/432	0.23% (95%CI 0–1.3)
Cardiac arrest	0/432	0% (95%CI 0–0.85)

Abbreviations: RBC, red blood cell; FFP, fresh frozen plasma; CI, confidence interval

^*see table 1 for definitions of critical care intervention