Determining delayed admission to the intensive care unit for mechanically ventilated patients in the emergency department

Table 5 Correlation matrix of the time of different phases of ED stay and APACHE II scores (n = 1,242)

	Door to ventilator	Ventilator to leaving ED	LOS in ED
APACHE II score	-0.18**	0.05	-0.09*
Door to ventilator^a		-0.03	0.68**
Ventilator to leaving ED^b			0.68**
LOS in ED^c

^aDoor to ventilator, time between arrival at the ER and connecting to the ventilator; ^bventilator to leaving ED, time between connecting to the ventilator and leaving the emergency department; ^cLOS in ED, length of stay in the ED. ^* P <0.005, ^** P <0.0005. ED, emergency department; APACHE, acute physiology and chronic health evaluation; LOS, length of stay.

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