Risk and clinical-outcome indicators of delirium in an emergency department intermediate care unit (EDIMCU): an observational prospective study

Table 1 Patient demographics and characteristics stratified by delirium status

	Delirium	No delirium	p-value
Patients, n (% total) ^a	57 (20.1)	226 (79.9)
Characteristic
Mean age, years (SD)	67.1 (± 16.0)	60.3 (± 17.6)	0.010
Female, n (% group)	18 (31.6)	89 (39.4)	0.278
SIRS criteria, %	38.6	23.5	0.028
Median Charlson (IQR)	4 (5)	3 (4)	0.039
Admission type (intra/inter hospital transfer category), n (% group; % origin) ^b			< 0.001
Emergency department	28 (49.1; 23.0)	94 (41.6; 77.0)
Operating room	6 (10.5; 6.4)	88 (38.9; 93.6)
Wards	8 (14.0; 25.0)	24 (10.6; 75.0)
Intensive care unit	7 (12.3; 63.6)	4 (1.8; 36.4)
Inter-hospital transfer	8 (14.0; 33.3)	16 (7.1; 66.7)
Emergency physician diagnosis by organ system, n (% group; % diagnosis) ^c			0.031
Cardiovascular	12 (21.1; 21.1)	45 (19.9; 78.9)
Drug toxicity/withdrawal	2 (3.5; 33.3)	4 (1.8; 66.7)
Gastrointestinal	11 (19.3; 11.7)	51 (22.6; 82.3)
Genitourinary	6 (10.5; 22.2)	21 (9.3; 77.8)
Neurologic	2 (3.5; 50.0)	2 (0.9; 50.0)
Haemato-oncologic	4 (7.0; 11.8)	30 (13.3; 88.2)
Pulmonary	13 (22.8; 36.1)	23 (10.2; 63.9)
Trauma/musculoskeletal	7 (12.3; 21.9)	25 (11.1; 78.1)
Other	0 (0.0; 0.0)	25 (11.1; 100.0)

^aOf the n = 298 patients enrolled, n = 15 were excluded due to dementia, neuropsychiatry illness or persistent coma (CAM-ICU assessment not conducted). ^bSignificant differences between ICU and ED (p = 0.008), OR (p < 0.001) and ward (p = 0.035), and between OR and ED (p = 0.016) and IHT (p = 0.020) (ANOVA, multiple comparisons Tukey post hoc HSD). ^cSignificant differences between Pulmonary and Other (p = 0.015) (ANOVA, multiple comparisons Tukey post hoc HSD). ED = emergency department, ICU = intensive care unit, IHT = inter-hospital transfer, IQR = interquartile range, OR = operating room; SD = standard deviation; SIRS = systemic inflammatory response syndrome.

ISSN: 1471-227X