Table 1.
Demographic and Clinical Characteristics in Mild and Moderate-Severe Traumatic Brain Injury Patientsa
| Variable | Mild TBI (n=32) | Moderate-Severe TBI (n=32) |
|---|---|---|
| Age (years) | 36.2 (11.0) | 36.5 (13.3) |
| Race | ||
| White | 18 (56%) | 21 (66%) |
| Black | 6 (19%) | 3 (9%) |
| Hispanic | 5 (16%) | 3 (9%) |
| Asian / Pacific Islander | 3 (9%) | 2 (6%) |
| Native American | 0 (0%) | 3 (9%) |
| Male Gender | 22 (69%) | 27 (84%) |
| Medical Co-morbidities | ||
| Pulmonary | 0 (0%) | 0 (0%) |
| Hypertension | 1 (3%) | 1 (3%) |
| Diabetes | 0 (0%) | 2 (6%) |
| Renal Disease | 0 (0%) | 0 (0%) |
| Injury Mechanism | ||
| Fall | 6 (19%) | 10 (31%) |
| Motor vehicle crash | 11 (34%) | 10 (31%) |
| Vehicle vs. pedestrian | 3 (9%) | 5 (16%) |
| Bicycle crash | 3 (9%) | 1 (3%) |
| Gunshot to head | 0 (0%) | 1 (3%) |
| Assault | 6 (19%) | 3 (9%) |
| Other | 3 (9%) | 2 (6%) |
| Initial Head CT Findingsb | ||
| Epidural hemorrhage | 4 (13%) | 5 (16%) |
| Subdural hemorrhage | 7 (22%) | 24 (75%) |
| Subarachnoid hemorrhage | 2 (6%) | 23 (72%) |
| Intraparenchymal hemorrhage | 4 (13%) | 15 (47%) |
| Glasgow Coma Scale | ||
| Admission GCS | 14.8 (0.4) | 5.2 (2.5) |
| Highest GCS (within 24 hours) | 15.0 (0.2) | 9.0 (3.0) |
| Lowest GCS (within 24 hours) | 14.5 (0.8) | 4.8 (2.4) |
| Admission Hematocrit (%) | 40.6 (4.5) | 38.0 (5.3) |
a
Values are mean(SD) for continuous variables and n(%) for categorical variables.
b
Some patients had multiple head CT findings.
CT=Computed Tomography; GCS=Glasgow Coma Scale; bpm=beats per minute; MAP=mean arterial pressure