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Table 2 ICU course and outcome parameters after day 21

From: Anemia, transfusion, and phlebotomy practices in critically ill patients with prolonged ICU length of stay: a cohort study

Parameter

All patients (n = 155)

Never transfused (n = 59)

Ever transfuseda (n = 71)

P value

Illness acuity

    

   Mechanical ventilation

154 (99%)

58 (98%)

71 (100%)

0.45b

   Inotropes/vasopressors

59 (38%)

9 (15%)

31 (44%)

0.0005

   ARF requiring dialysis

24 (15%)

3 (5%)

13 (18%)

0.02

   SOFA scorec

4.8 ± 3.2

3.6 ± 2.1

5.1 ± 3.6

0.006

Anemia

    

   Day 22–112 Hb (g/dl)

9.1 ± 0.9

9.6 ± 1.0

8.8 ± 0.6

0.001

   Phlebotomy volume (ml/pt/day)

13.3 ± 7.3

8.7 ± 4.4

14.6 ± 6.5

<0.0001

   Median PRBC units transfused

1 (0–4)

-

2 (1–4)

 

Outcomes

    

   Median ICU LOS (days)

49 (36–70)

39 (31–58)

51 (41–72)

0.001d

   Median hospital LOSe (days)

84 (55–132)

76 (55–123)

93 (56–162)

0.18d

   ICU mortality (%)

    

Days 22–112

35 (23%)

5 (8%)

16 (23%)

0.03

Total

47 (30%)

8 (14%)

23 (32%)

0.01

  1. Values are expressed as n (%), mean ± standard deviation, or median (interquartile range). aExcludes 25 patients with active bleeding. bFisher's exact test for small samples of categorical variables. cAverage score from day 21 onward; these were unavailable for 24 nonbleeding patients (12 in each group). dWilcoxon's test for non-normally distributed variables. eHospital LOS unavailable for 2 nonbleeding patients (one in each group). ARF, acute renal failure; Hb, hemoglobin; ICU, intensive care unit; LOS, length of stay; PRBC, packed red blood cells; pt, patient; SOFA, Sequential Organ Failure Assessment.