Table 1.
Demographics and Clinical Characteristics Compared across TBI+Polytrauma versus Isolated TBI Groups
| |
Total |
TBI+Polytrauma |
|
|
|---|---|---|---|---|
| Variable | (n = 361) | No (n = 292) | Yes (n = 69) | Sig. (p) |
| Age | 0.337 | |||
| Mean (SD) | 44.9 (18.9) | 45.3 (18.8) | 42.9 (19.5) | |
| Sex | 0.089 | |||
| Male | 252 (69.8%) | 198 (67.8%) | 54 (78.3%) | |
| Female | 109 (30.2%) | 94 (32.2%) | 15 (21.7%) | |
| Race | 0.572 | |||
| Caucasian | 291 (80.6%) | 233 (79.8%) | 58 (84.1%) | |
| African/AA | 26 (7.2%) | 23 (7.9%) | 3 (4.3%) | |
| Other | 44 (12.2%) | 36 (12.3%) | 8 (11.6%) | |
| Education | 0.793 | |||
| Mean (SD) | 14.1 (2.9) | 14.1 (2.9) | 14.0 (2.8) | |
| Psychiatric history | 0.242 | |||
| No | 251 (69.5%) | 199 (68.2%) | 52 (75.4%) | |
| Yes | 110 (30.5%) | 93 (31.8%) | 17 (24.6%) | |
| Mechanism of injury | <0.001 | |||
| Motor vehicle accident | 86 (23.9%) | 54 (18.6%) | 32 (46.4%)* | |
| Pedestrian struck | 46 (12.8%) | 31 (10.7%) | 15 (21.7%)* | |
| Fall from moving object | 44 (12.2%) | 40 (13.7%) | 4 (5.8%) | |
| Fall from stationary | 128 (35.6%) | 113 (38.8%) | 15 (21.7%)* | |
| Assault | 47 (13.1%) | 45 (15.5%) | 2 (2.9%)* | |
| Other | 9 (2.5%) | 8 (2.7%) | 1 (1.4%) | |
| Mechanism (high speed) | <0.001 | |||
| No | 229 (63.4%) | 207 (70.9%) | 22 (31.9%) | |
| Yes | 132 (36.6%) | 85 (29.1%) | 47 (68.1%) | |
| Initial GCS | <0.001 | |||
| 3-8 | 51 (14.1%) | 28 (9.6%)* | 23 (33.3%)* | |
| 9-12 | 21 (5.8%) | 17 (5.8%) | 4 (5.8%) | |
| 13-15 | 289 (80.1%) | 247 (84.6%)* | 42 (60.9%)* | |
| Marshall CT score | 0.016 | |||
| 1 | 174 (48.2%) | 148 (50.7%) | 26 (37.7%) | |
| 2 | 135 (37.4%) | 102 (34.9%)* | 33 (47.8%)* | |
| 3-4 | 29 (8.0%) | 20 (6.8%) | 9 (13.0%) | |
| 5-6 | 23 (6.4%) | 22 (7.5%) | 1 (1.4%) | |
High-speed mechanism = motor vehicle accident or pedestrian struck by vehicle.
AA, African-American; CT, computed tomography; GCS, Glasgow Coma Scale; SD, standard deviation; TBI, traumatic brain injury.