Table 3

Clinical variables associated with delirium used in the multivariable logistic regression model

	OR	95% CI	P value
Admission source (ref: ED)
Clinic	0.557	0.481 to 0.644	<0.0001
IHT	1.912	1.741 to 2.099	<0.0001
Group of specialty (ref: General Internal Medicine)
ICU	3.164	1.900 to 5.267	<0.0001
Neurology	0.992	0.881 to 1.116	0.8903
OBGYN	0.422	0.286 to 0.624	<0.0001
Surgery	0.754	0.682 to 0.834	<0.0001
Age group (ref: 18–49)
50–64	1.438	1.287 to 1.607	<0.0001
65–79	2.018	1.799 to 2.264	<0.0001
80+	2.8	2.405 to 3.259	<0.0001
Female	0.996	0.921 to 1.077	0.9153
Race (ref: White)
Black	1.182	1.083 to 1.291	0.0002
Other	1.155	0.939 to 1.423	0.1733
Marital status (ref: Married)
Other	1.151	1.042 to 1.272	0.0056
Single	1.236	1.122 to 1.362	<0.0001
Distance_MUSC≥50	0.882	0.809 to 0.962	0.0045
Poverty	1.009	0.928 to 1.096	0.8362
Antipsychotic	3.220	2.977 to 3.483	<0.0001
Anticholinergics	0.826	0.761 to 0.897	<0.0001
Opioid	1.032	0.931 to 1.145	0.5481
Benzodiazepine	2.422	2.235 to 2.625	<0.0001
Falls	2.773	2.107 to 3.648	<0.0001
Alcohol abuse	1.728	1.516 to 1.971	<0.0001
Dementia	3.922	3.431 to 4.484	<0.0001
Myocardial infarction	1.284	1.157 to 1.425	<0.0001
Congestive heart failure	1.146	1.039 to 1.265	0.0067
Cerebrovascular disease	2.377	2.132 to 2.650	<0.0001
Chronic pulmonary disease	1.020	0.930 to 1.119	0.6776
Peptic ulcer disease	1.392	1.084 to 1.789	0.0096
Uncomplicated diabetes	0.936	0.826 to 1.061	0.2998
Complicated diabetes	1.206	1.091 to 1.333	0.0002
Hemiplegia	2.494	2.144 to 2.901	<0.0001
Renal disease	1.042	0.939 to 1.155	0.4409
Cancer	0.896	0.811 to 0.989	0.0302
AIDS/HIV	1.308	0.960 to 1.783	0.089
Liver disease	1.589	1.398 to 1.807	<0.0001

ED, emergency department; ICU, intensive care unit; IHT, interhospital transfer; MUSC, Medical University of South Carolina; OBGYN, obstetrics and gynecology.