Table 1 Characteristics of patients with and without blood transfusion

Age, years, mean (SD)^a

39.0 (18.2)

38.6 (17.0)

.885

Male, n [%]/female, n [%]^b

63 [82.9]/13 [17.1]

66 [95.7]/3 [4.3]

.014

ISS, mean (SD)^c

35.1 (17.5)

16.4 (14.0)

≤.001

GCS, mean (SD)^c

9 .2 (4.9)

11.9 (4.6)

≤.001

BAC, g/l, mean (SD)^c

.65 (.90)

.41 (.74)

.053

Severe head injury, n [%]^b

44 [57.9]

20 [29.0]

≤.001

Mortality, n [%]^b

15 [19.7]

3 [4.3]

.005

ICU admission, n [%]^b

67 [88.2]

28 [40.6]

≤.001

ICU days, mean (SD) ^c

16.0 (14.5)

3.5 (7.0)

≤.001

Artificial ventilation, n [%]^b

61 [80.3]

18 [26.1]

≤.001

Artificial ventilation hours, mean (SD)^c

273.8 (293.2)

47.0 (118.5)

≤.001

No intubation, n [%]^b

17 [22.4]

44 [63.8]

≤.001

Hemoglobin, mmol/l, mean (SD)^a

5.4 (1.3)

7.8 (1.2)

≤.001

Prothrombin, sec, mean (SD)^c

72.7 (28.7)

95.7 (25.7)

≤.001

Lactat, mmol/l, mean (SD)^c

3.1 (2.7)

1.9 (1.8)

≤.001

Trauma context, n [%]^b

.603

   Traffic accident

50 [65.8]

45 [65.3]

Pedestrian

6 [7.9]

3 [4.3]

Bicyclist

6 [7.9]

8 [11.6]

Motorbiker

13 [17.1]

16 [23.2]

Car driver

24 [31.6]

16 [23.2]

Truck driver

1 [1.3]

2 [2.9]

   Fall from height

25 [32.9]

21 [30.4]

   Other

1 [1.3]

3 [4.3]

Admission characteristics, n [%]^b

   Primary from the scene/

51 [67.1]/

61 [88.4]/

.002

   Secondary from other hospital

25 [32.9]

8 [11.6]

.125.

   Helicopter total

46 [60.5]

33 [47.8]

.012

   Helicopter secondary

19 [25.0]

7 [10.1]