Acute kidney injury in critical COVID-19: a multicenter cohort analysis in seven large hospitals in Belgium

Table 3 AKI stages according to serum creatinine or urine output and ICU mortality

AKI stages	No AKI-UO	AKI-UO 1	AKI-UO 2	AKI-UO 3	Total
No AKI-sCr ICU mortality	190 12 (6.3%)	100 15 (15.0%)	409 68 (16.6%)	70 13 (18.6%)	769 108 (14.0%)
AKI-sCr 1 ICU mortality	29 10 (34.5%)	25 5 (20.0%)	150 52 (34.7%)	70 35 (50.0%)	274 102 (37.2%)¹
AKI-sCr 2 ICU mortality	7 4 (57.1%)	6 0 (0%)	37 10 (27.0%)	20 15 (75.0%)	70 29 (41.4%)²
AKI-sCr 3 ICU mortality	11 7 (63.6%)	4 1 (25.0%)	34 18 (52.9%)	120 68 (56.7%)	169 94 (55.6%)³
Total ICU mortality	237 33 (13.9%)	135 21 (15.6%)¹	630 148 (23.5%)²	280 131 (46.8%)³	1282 (333) 26.0%

Bold 1 (diagonal): ICU mortality in patients having AKI according to both criteria (sCr and UO). Bold 2 (row or column 'total'): ICU mortality per AKI stage according to the used criterium
Statistical significance of comparison of ICU mortality in AKI-sCr versus AKI-UO stages: ¹AKI stage 1: p < 0.001; ²AKI stage 2: p = 0.001; ³AKI stage 3: p = 0.070
AKI acute kidney injury, AKI-sCr AKI based on creatinine criteria only, AKI-UO AKI based on urine output criteria only, ICU intensive care unit

ISSN: 1364-8535