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

Table 4 Cox regression analysis of mortality in the first 21 ventilator days across the different diagnostic categories in multivariate analysis

Diagnostic categories	HR^a(95% CI)	Pvalue
Seizure disorder	0.11 (0.02-0.81)	0.030
Renal/Metabolic	0.37 (0.12-1.16)	0.089
CHF	0.65 (0.36-1.18)	0.154
COPD	0.65 (0.36-1.18)	0.158
Neurologic (NOS)	0.88 (0.47-1.62)	0.671
Aspirations pneumonia/poisoning/toxicity	0.90 (0.39-2.03)	0.790
CAD	0.94 (0.59-1.50)	0.781
Respiratory infection	1 (reference)
ICH/SAH/SDH	1.31 (0.94-1.84)	0.112
Drug overdose	1.41 (0.35-5.72)	0.632
Respiratory (NOS)	1.45 (0.80-2.61)	0.219
Else	1.55 (0.91-2.64)	0.108
Neoplasm	1.57 (0.76-3.21)	0.222
Sepsis	1.74 (1.40-2.17)	<0.001
Post-cardiac arrest	2.06 (1.43-2.96)	<0.001
Gastrointestinal bleeding	2.88 (1.69-4.92)	<0.001

^aDerived from multivariate Cox regression; had adjusted sex, ICU waiting time, APACHE II score, triage level. HR, hazard ratio; CHF, congestive heart failure; COPD, chronic obstructive pulmonary disease; NOS, not otherwise specified; CAD, coronary artery disease; ICH/SAH/SDH, intracerebral hemorrhage/subarachnoid hemorrhage/subdural hemorrhage.

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