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Table 3 Outcomes among patients with and without acute kidney injury

From: Factors associated with acute kidney injury in acute respiratory distress syndrome

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
  1. AKI acute kidney injury, ICU intensive care unit, IQR interquartile range
  2. ap < 0.05 when compared with patients without AKI
  3. bp < 0.05 when compared with patients with stage I AKI
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