Table 1.

Patient characteristics and outcomes

Variable	No AKI (n = 72)	AKI (n = 21)	P value
Age (years)	50 (28, 65)	66 (57, 71)	0.002
Female gender	22 (31 %)	5 (24 %)	0.79
APACHE II score	15 (11, 19)	19 (14, 24)	0.01
Body weight (kg)	78 (70, 90)	88 (79, 93)	0.06
Baseline creatinine (µmol/l)	82 (69, 91)	83 (71, 88)	0.69
True baseline creatinine available	52 (72 %)	12 (57 %)	0.28
Time admission–enrolled (h)	12 (5, 23)	8 (3, 14)	0.10
Time from first biomarker analysis to AKI diagnosis (days)	N/A	1.0 (0.5, 1.5)
Comorbidity
Diabetes	6 (8 %)	5 (24 %)	0.12
Cardiovascular disease	20 (28 %)	11 (52 %)	0.06
COPD/asthma	5 (7 %)	2 (10 %)	0.65
Gastrointestinal/liver disease	2 (3 %)	3 (14 %)	0.07
Any malignancy	11 (15 %)	3 (14 %)	1.0
Admission diagnosis
Neurologic	4 (6 %)	1 (5 %)	0.03
Respiratory	14 (19 %)	6 (29 %)
Cardiovascular	2 (3 %)	5 (24 %)
Trauma	37 (51 %)	7 (33 %)
Gastrointestinal	3 (4 %)	1 (5 %)
Sepsis	12 (17 %)	1 (5 %)
Outcome
ICU length of stay, days	5 (3, 9)	4 (3, 8)	0.72
ICU mortality	4 (6 %)	2 (10 %)	0.62
30-day mortality	8 (11 %)	4 (19 %)	0.46

Values are median (interquartile range) or n (%)