Table 2.
Cumulative 30-day and 31-365 day mortality and corresponding hazard ratios (HRs) by AKI status
| Number of deaths | Number at period start | Cumulative mortality % (95% CI) |
Unadjusted HR (95% CI) |
Adjusted HRa (95% CI) |
|
|---|---|---|---|---|---|
| 0 to 30 days | |||||
| Without AKI | 3,327 | 25,969 | 12.8% (12.4-13.2) | 1(ref.) | 1(ref.) |
| AKI-risk | 704 | 1,986 | 35.5% (33.4-37.6) | 3.17 (2.93-3.45) | 1.96 (1.80-2.13) |
| AKI-injury | 579 | 1,311 | 44.2% (41.5-46.9) | 4.21 (3.86-4.60) | 2.60 (2.38-2.85) |
| AKI-failure | 613 | 1,496 | 41.0% (38.5-43.5) | 3.83 (3.52-4.18) | 2.41 (2.21-2.64) |
| 31 to 365 days | |||||
| Without AKI | 2,421 | 22,642 | 10.7% (10.3-11.1) | 1 (reference) | 1 (reference) |
| AKI-risk | 263 | 1,282 | 20.5% (18.4-22.8) | 2.04 (1.80-2.32) | 1.33 (1.17-1.51) |
| AKI-injury | 174 | 732 | 23.8% (20.9-27.0) | 2.46 (2.11-2.87) | 1.60 (1.37-1.87) |
| AKI-failure | 205 | 883 | 23.2% (20.6-26.1) | 2.38 (2.06-2.75) | 1.64 (1.42-1.90) |
aAdjusted for age, gender, Charlson comorbidity index score, surgical status, and chronic kidney disease.
AKI, acute kidney injury; CI, confidence interval; HR, hazard ratio; ICU, intensive care unit.