Table 2.

Crude proportion of study outcomes stratified by the 6 CKD/AKI groups

Group	90-Day mortality	Incident/progressive CKD
no-CKD
no-AKI	104/598 (17.4%)	33/321 (10.3%)
AKI 1	93/363 (25.6%)	42/183 (22.9%)
AKI ≥2	193/460 (42.0%)	51/175 (29.1%)
CKD
no-AKI	106/537 (19.7%)	24/259 (9.3%)
AKI 1	82/364 (22.5%)	20/181 (11.0%)
AKI ≥2	125/310 (40.3%)	33/116 (28.4%)

AKI, acute kidney injury; CKD, chronic kidney disease.

The 90-day mortality denotes all-cause death during index hospital admission or within 90 days of hospital discharge. Incident/progressive CKD (in patients without and with baseline CKD, respectively) was adjudicated in survivors during median follow-up of 15.3 months.