Table 1 Comparison of variables between patients transfused RBCs of decreased and increased storage age for patients transfused 5 or more units of RBCs

Age

48.0 (27.0 to 60.5)

45.0 (27.0 to 63.0)

0.83

Male%

78/101 (77.2%)

73/101 (72.3%)

0.42

Race (W, B, H, AP, O)%

(76.2, 6.9, 9.9, 2.0, 5.0)

(82.2, 5.9, 8.9, 0, 3.0)

0.58

Blunt injury

90/101 (89.1%)

97/101 (96.0%)

0.05

Glasgow Coma Score

14.0 (3.0 to 15.0)

14.0 (3.0 to 15.0)

0.48

Systolic blood pressure

126.0 (103.0 to 141.0)

123.0 (99.3 to 143.0)

0.57

Heart rate

100.0 (80.0 to 120.0)

99 (79.5 to 120.0)

0.57

Temperature (F)

96.5 (95.6 to 97.4)

96.5 (95.2 to 98.0)

0.75

HCO3

21.0 (19.0 to 23.0)

21 (19.3 to 23.8)

0.81

pH

7.3 (7.2 to 7.4)

7.3 (7.2 to 7.4)

0.37

Prothrombin time (seconds)

13.0 (12.2 to 14.5)

13.2 (12.2 to 14.2)

0.91

Hematocrit (%)

36.9 (32.9 to 39.2)

36.1 (31.1 to 39.6)

0.32

Heparin IV (%)*

14/101 (13.9%)

19/101 (18.8%)

0.34

Heparin SC (%)*

48/101 (47.5%)

51(101) (50.1%)

0.67

Enoxaparin SC (%)*

21/101 (20.8%)

25/101 (24.8%)

0.50

Pneumatic compression device (%)*

79/101 (78.2%)

72/101 (71.3%)

0.26

Long bone fracture (%)

46/101 (45.5%)

48/101 (47.5%)

0.78

Spinal cord injury (%)

5/101 (5.0%)

10/101 (9.9%)

0.28

RBC amount (Units)

9.0 (6.0 to 12.5) [10.5, 6.0]

9.0 (6.0 to 12.0) [10.4, 5.9]

0.95

RBC leukoreduced%

50.0 (25.8 to 85.7)

62.5 (37.3 to 83.3)

0.49

Maximum RBC storage age (days)

19.0 (16.0 to 24.0)

34.0 (31.0 to 38.0)

< 0.001

Median RBC storage age (days)

14.0 (11.0 to 17.0)

20.5 (15.5 to 26.0)

< 0.001

FFP (Units)

0.0 (0.0 to 4.0) [2.5]

0.0 (0.0 to 4.0) [2.5]

0.82

aPLT (Units)

0.0 (0.0 to 0.0) [0.2]

0.0 (0.0 to 0.5) [0.2]

0.24

Cryoprecipitate (Units)

0.0 (0.0 to 0.0) [.1]

0.0 (0.0 to 0.0) [0.1]

0.44

Injury Severity Score

24.0 (14.0 to 34.0)

24 (13.5 to 33.5)

0.82