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Table 4 Patient outcomes (quartiles according to the oldest red blood cells transfused)

From: Age of red blood cells and outcome in acute kidney injury

  Quartile 1 Quartiles 2 to 4 P-value
(n = 143) (n = 509)
ICU length of stay, days 2.8 (1.6, 4.8) 4.2 (1.9, 8.7) <0.001
Renal non-recovery† 1.4% (0.4, 5.0) 1.2% (0.5, 2.6) 0.689
Hospital mortality 10.5% (5.5, 15.5) 20.8% (17.3, 24.4) 0.005
90-day mortality 20.3% (13.7, 26.9) 29.9% (25.9, 33.8) 0.026
  1. The results are presented as median and IQR or as percentage with 95% confidence interval. Renal non-recovery is defined as dialysis dependence at 90 days.