Table 3.
Outcomes among patients with and without acute kidney injury
| Outcomes | No AKI (113) | Stage I AKI (60) | Stage II AKI (66) | Stage III AKI (118) | p |
|---|---|---|---|---|---|
| Ventilator-free days to day 28, median (IQR), days | 13 (0–20) | 12 (0–18) | 0 (0–14)a | 0 (0–0)a, b | < 0.001 |
| Duration of mechanical ventilation, median (IQR), days | 11 (6–18.3) | 12 (8–18.3) | 12 (7–20.8) | 13 (6–22.8) | 0.43 |
| ICU length of stay, median (IQR), days | 12 (6.8–17) | 13 (9–22) | 13 (6.3–20.8) | 13 (7–25) | 0.58 |
| Hospital length of stay, median (IQR), days | 16 (10–24.3) | 17 (12.8–26) | 20 (11.5–26.8) | 19 (8–29) | 0.82 |
| ICU mortality (%) | 32 (28.6) | 17 (28.3) | 32 (48.5) | 72 (61)a, b | < 0.001 |
| Hospital mortality (%) | 32 (28.6) | 18 (30) | 36 (54.5)a | 73 (61.9)a, b | < 0.001 |
| Day 28 mortality (%) | 29 (25.7) | 19 (31.7) | 32 (48.5)a | 65 (55.1)a, b | < 0.001 |
| Day 90 mortality (%) | 35 (31) | 22 (36.7) | 40 (60.6)a | 73 (61.9)a, b | < 0.001 |
AKI acute kidney injury, ICU intensive care unit, IQR interquartile range
ap < 0.05 when compared with patients without AKI
bp < 0.05 when compared with patients with stage I AKI