Table 2.

Distribution of epidemiological and morbidity-associated characteristics in AKIN stages I–III.

Risk factor	AKIN I (n = 50)	AKIN II (n = 210)	AKIN III (n = 220)	p value
Gender (%)	f: 58; m: 42	f: 46.2; m: 53.8	f: 41.8; m: 58.2	0.11
Age (mean years ± SEM)	71.5 ± 2.1	74.5 ± 0.8	72.7 ± 0.9	0.18
DOS (mean days ± SEM)	13.7 ± 1.4	15.3 ± 1.2	14.2 ± 0.8	0.69
Preexisting CKD (%)	46	68,3	58,6	0.007
AKI onset (outpatient vs. in-hospital, %)	o: 54.2; i: 45.8	o: 64.7; i: 35.3	o: 63.8; i: 36.2	0.38
Dialysis due to AKI (%)	0	0,5	12	<0.001
Survival (%)	88	78,6	65	<0.001
Renal recovery (%)	32	27,1	17,8	0.023
Creatinine initially (micromole/L ± SEM)	124 ± 6.4	169 ± 4.6	329 ± 17.4	<0.001
CRP initially (mg/L ± SEM)	61.2 ± 11.3	91.5 ± 7.7	100.9 ± 7.6	0.07
Vasopressor (%)	16	25,2	39,3	<0.001
Invasive ventilation (%)	16	24,3	32,9	0,02
Arterial hypertension (%)	84	90	90	0,42
Coronary artery disease (%)	34	36,7	30,5	0,39
Chronic heart failure (%)	38	45,2	38,2	0,29
Diabetes mellitus (%)	36	36,2	38,6	0,85
Obesity (%)	18	17,1	12,7	0,37
Neoplasia (%)	18	31,6	30,6	0,15

The values in bold represent statistically significant results.