Table 1.
Demographics and clinical characteristics
| All | Non-PHH | PHH | p-value | |
|---|---|---|---|---|
| n | 78 | 44 | 34 | - |
| Age, median (IQR), y | 29 (22–42) | 24 (21–40) | 35 (22–42) | 0.044 |
| BMI, median (IQR), kg/m2 | 26 (24–29) | 26 (24–29) | 27 (24–30) | 0.343 |
| Education, No. (%) | ||||
| < HS | 14 (18) | 15 (34) | 13 (41) | 0.242 |
| HS | 34 (45) | 23 (52) | 11 (34) | |
| > HS | 28 (37) | 6 (14) | 8 (25) | |
| Race, No. (%) | ||||
| Caucasian | 72 (92) | 40 (91) | 32 (94) | 0.815 |
| African American | 4 (5) | 3 (7) | 1 (3) | |
| Other | 2 (3) | 1 (2) | 1 (3) | |
| GCS (best in 24 h), median (IQR) | 7 (6–9) | 7 (6–9) | 7 (6–9) | 0.782 |
| Injury severity score, median (IQR) | 30 (26–38) | 30 (26–38) | 30 (25–39) | 0.541 |
| Length of hospital stay, median (IQR) | 20 (16–27) | 19 (15–26) | 23 (18–35) | 0.076 |
| Mechanism of injury, No. (%) | ||||
| Motor vehicle accident | 39 (51) | 26 (61) | 13 (39) | 0.173 |
| Motorcycle accident | 22 (29) | 11 (26) | 11 (33) | |
| Fall/jump | 12 (16) | 4 (9) | 8 (24) | |
| Bicycle accident | 3 (4) | 2 (5) | 1 (3) | |
| Radiographic Injury Type, No. (%) | ||||
| Subdural hematoma | 47 (62) | 26 (59) | 21 (66) | 0.563 |
| Subarachnoid hemorrhage | 49 (65) | 28 (64) | 21 (66) | 0.858 |
| Diffuse axonal injury | 18 (24) | 16 (36) | 2 (6) | 0.002 |
| Epidural hemorrhage | 10 (13) | 6 (14) | 4 (13) | 1.000 |
| Contusion | 26 (24) | 14 (32) | 12 (38) | 0.606 |
| Intraventricular hemorrhage | 15 (20) | 9 (21) | 6 (19) | 0.854 |
| Intracerebral hemorrhage | 26 (34) | 13 (30) | 13 (41) | 0.315 |
| Other | 4 (5) | 2 (5) | 2 (6) | 1.000 |