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Table 3 Main outcome variables

From: Mortality and morbidity of low-grade red blood cell transfusions in septic patients: a propensity score-matched observational study of a liberal transfusion strategy

Outcome Propensity-matched groups Relative risk (95% CIa) Absolute risk increase (95% CI) Pb
Control n = 237 RBCcn = 237    
90-day mortality 80 (34) 102 (43) 1.28 (1.01–1.61) 9.3% (0.6–18%) 0.032
180-day mortality 91 (38) 116 (49) 1.27 (1.04–1.57) 11% (1.7–19%) 0.018
RRTd 21 (8.9) 48 (20) 2.29 (1.41–3.69) 11% (5.1–18%) 0.001
AKIN 0 (0–2) 0 (0–3)    0.001
DAFe of RRT 28 (16–28) 28 (9–28)    0.29
DAF of vasopressors 26 (13–27) 23 (7–26)    0.009
DAF of mechanical ventilation 26 (12–28) 21 (4–27)    0.002
SOFA maxf 9 (7–12) 11 (8–13)    < 0.001
  1. Data are presented as number (%) or median (interquartile range)
  2. aConfidence interval
  3. bWilcoxon rank sum or McNemar´s test
  4. cLow-grade red blood cell transfusion defined as < 670 ml any of the first 5 days
  5. dRenal Replacement Therapy
  6. eDays Alive and Free
  7. fSequential Organ Failure Assessment score the first 10 days after admission