Table 3.

Clinical characteristics of all patients with acute kidney injury.

Clinical characteristics	No delirium (N = 153)	Delirium (N = 230)	p-value
ICU stay (days)	2.0 (1.3–3.6)	5.7 (2.7–9.9)	< 0.001
Mortality	12 (7.8%)	50 (21.7%)	< 0.001
TISS 10	6 (5–13); N = 150	10 (5–15); N = 229	< 0.001
SAPS 2	40 (32–50.3); N = 150	48 (40–56); N = 229	< 0.001
Cause of illness
Cardiac	75 (49.0%)	100 (43.5%)	0.286
Respiratory	24 (15.7%)	51 (22.2%)	0.117
Infectious	34 (22.2%)	63 (27.4%)	0.255
Other	27 (17.6%)	43 (18.7%)	0.795
Resuscitation	3 (2.0%)	28 (12.6%)	< 0.001
Non-invasive ventilation	33 (21.6%)	101 (43.9%)	< 0.001
Invasive mechanical ventilation	29 (19.0%)	92 (40.0%)	< 0.001
Days on mechanical ventilation	0 (0–0.3)	0.5 (0–4.8)	< 0.001
Catecholamine therapy (shock)	41 (33.3%)	158 (68.7%)	< 0.001
Severe shock	24 (15.7%)	93 (40.4%)	< 0.001
ECMO	4 (2.6%)	18 (7.8%)	0.032
Opiate	86 (56.2%)	172 (74.8%)	< 0.001
Propofol	38 (24.8%)	127 (55.2%)	< 0.001
Isoflurane	1 (0.7%)	27 (11.7%)	< 0.001
α2-adrenoceptor agonist	15 (9.8%)	105 (45.7%)	< 0.001
Coronary angiography	36 (23.5%)	57 (24.8%)	0.779
AKI stage II/III	62 (40.5%)	125 (54.3%)	0.008
Renal replacement therapy	18 (11.8%)	34 (14.8%)	0.398
Transient AKI	35 (22.9%)	38 (16.5%)	0.121
Arterial line	97 (63.4%)	196 (85.2%)	< 0.001
Central venous catheter	77 (50.3%)	168 (73.0%)	< 0.001
Urinal catheter	96 (62.7%)	216 (93.9%)	< 0.001
Necessity of blood transfusion	45 (29.4%)	95 (41.3%)	0.018
Lactate at maximum mmol/l	2.5 (1.7–4.2)	3.6 (2.2–5.3); N = 229	< 0.001
Leucocytosis (> 104/µl)	105 (68.6%)	192 (83.5%)	0.001

p value reported in bold if difference is significant (p < 0.05). Data are given as median and interquartile range (25th–75th) or number of patients (percent of all patients in group).