Cumulative radiation exposure from diagnostic imaging in intensive care unit patients

Table 3 Binominal logistic regression model assessing the influence of four factors

	B	SE	Wald	df	P vaule	OR	95%CI for OR
							Lower	Upper
APACHE	0.012	0.020	0.389	1	0.533	1.013	0.974	1.053
Intubated	-0.069	0.039	3.034	1	0.082	0.934	0.864	1.009
Age	-0.034	0.009	15.058	1	< 0.0011	0.967	0.951	0.983
LOS	0.111	0.018	39.222	1	< 0.0011	1.118	1.079	1.157
Constant	-1.752	0.451	15.095	1	< 0.0001	0.174

¹Denotes significance below the 0.05 level. APACHE II: Acute physiology and chronic health evaluation score; number of intubated days (intubated); age on admission; and LOS, on the likelihood that a patient would receive a cumulative effective dose greater than 15 mSv. APACHE: Acute physiology and chronic health evaluation; LOS: Length of stay.