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Table 1 Demographic and clinical characteristics of 331 trauma patients

From: Traumatic brain injury is associated with increased syndecan-1 shedding in severely injured patients

 

All patients N = 331

Non-TBI Polytrauma N = 205

Poly TBI N = 68

Isolated TBI N = 58

P value

Demography

 Age, y

43 [29–58]a

42 [27–57]

44 [34–58]

50 [33–76]

0.12

 Male, n (%)

236 (71.3)

145 (70.7)

52 (76.5)

39 (67.2)

0.5

 ISS

22 [16–29]

19 [14–27]

34 [27–41]d

25 [16–26]e

< 0.0001

 Head AIS = 3, n (%)

45 (35.7)b

30 (44.1)

15 (25.9)

0.015

 Head AIS = 4, n (%)

35 (27.8)b

21 (30.9)

14 (24.1)

 

 Head AIS ≥ 5, n (%)

45 (35.7)b

16 (23.5)

29 (50.0)

 

ED Vital Signs and Laboratory Values

 SBP, mmHg

119 [99–140]

114 [93–137]f

116 [100–139]

140 [128–158]e

0.0001

 HR, beats/min

95 [79–112]

96 [83–119]f

93 [77–111]

86 [70–102]

0.004

 BE, mEq/l

−4 [−7 to 0]

− 4 [− 7 to − 1]f

−5 [− 8 to − 2]

− 1 [− 5 to 2]e

0.0001

 Platelet count, 109/l

221 [185–270]

224 [189–278]f

222 [189–264]

206 [172–256]

0.2

 Hemoglobin, g/dl

13.0 [11.6–14.2]

13.0 [11.6–14.4]

13.2 [11.5–13.9]

13 [11.9–14.4]

0.86

 GCS

6 [3–15]

10 [3–15]f

3 [3–9]d

3 [3–9]

0.0001

Biomarkers

 sTM, ng/ml

6.2 [4.6–8.4]

6.1 [4.4–8.2]

6.5 [5.1–8.8]

5.6 [4.3–9.3]

0.24

 Syndecan-1, ng/ml

33.2 [16.6–79.1]

31.5 [15.5–61.2]

54.0 [25.1–107.0]d

25.0 [15.5–44.4]e

0.0007

 EoT+, n (%)

132 (39.8)

82 (40.0)

38 (55.9)d

12 (20.6)e

0.001

Outcomes

 Transfused, n (%)

191 (58.1)

114 (55.6)

50 (73.5)d

27 (46.5)e

0.014

 24-h mortality, n (%)

18 (5.4)

7 (3.4)f

4 (5.9)

6 (10.3)

0.025

 48-h mortality, n (%)

37 (11.2)

16 (7.8)f

9 (13.2)

12 (20.7)

0.02

 72-h mortality, n (%)

40 (12.1)

16 (7.8)f

11 (16.2)d

13 (22.4)

< 0.0001

 30-day mortality, n (%)

68 (20.5)

27 (13.2)f

19 (27.9)d

22 (37.9)

< 0.0001

  1. Abbreviations: TBI traumatic brain injury, ISS Injury Severity Score, AIS Abbreviated Injury Score, ED emergency room, SBP systolic blood pressure, HR heart rate, BE base excess, GCS Glasgow Coma Scale, sTM soluble thrombomodulin, EoT traumatic endotheliopathy
  2. aValues are medians and interquartile ranges (IQR) unless otherwise specified
  3. bOnly in 126 patients
  4. cData for only 226 patients
  5. dStatistically significant difference between the Polytrauma TBI and Non-TBI polytrauma groups
  6. eStatistically significant difference between the Polytrauma TBI and Isolated TBI groups
  7. fStatistically significant difference between the Non-TBI and Isolated TBI groups