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Table 1 Patient demographics for the cohort

From: Cerebrovascular pressure reactivity and brain tissue oxygen monitoring provide complementary information regarding the lower and upper limits of cerebral blood flow control in traumatic brain injury: a CAnadian High Resolution-TBI (CAHR-TBI) cohort study

Demographic parameter

Median or number of subjects

Age (IQR)

41 (25–57)

Gender

 

 Male subjects (%)

62 (80.5)

 Female subjects (%)

14 (18.2)

 N/A (%)

1 (1.3)

Admission GCS

 

 Eye (IQR)

1 (1–1)

 Verbal (IQR)

1 (1–1)

 Motor (IQR)

1 (1–4)

 Total (IQR)

3 (3–6)

Admission pupils

 

 Bilaterally reactive (%)

62 (80.5)

 Unilaterally reactive (%)

6 (7.8)

 Bilaterally unreactive (%)

8 (10.4)

 N/A (%)

1 (1.3)

Marshall CT classification

 

 I (%)

0 (0)

 II (%)

29 (37.7)

 III (%)

19 (24.7)

 IV (%)

6 (7.8)

 V (%)

4 (5.2)

 VI (%)

2 (2.6)

 N/A, n (%)

17 (22.1)

Follow-up GOS

 

 1 (%)

17 (22.1)

 2 (%)

1 (1.3)

 3 (%)

11 (14.3)

 4 (%)

18 (23.4)

 5 (%)

13 (16.9)

 N/A, n (%)

17 (22.1)

Percent time PbtO2 less than 20 mmHg (IQR)

12.3 (4.0–28.9)

Percent time CPP less than 60 mmHg (IQR)

2.1 (0.5–4.3)

Percent time CPP greater than 70 mmHg (IQR)

86.6 (74.0–95.7)

  1. GCS Glasgow Coma Scale, CT computerized tomography, GOS Glasgow Outcome Scale, IQR interquartile range, N/A not available