Table 1.
TBI Patient Demographics and Characteristics
| All | Non-PHH | PHH | p value | |
|---|---|---|---|---|
| n (%) | 143 | 92 (64.34) | 51 (35.66) | - |
| Age, median (IQR), y | 31 (26) | 28.5 (22.5) | 35 (27) | 0.08 |
| BMI, median (IQR), kg/m2 | 25.87 (5.26) | 25.84 (4.26) | 26.5 (6.51) | 0.34 |
| Education, n (%) | 0.16 | |||
| < HS | 42 (29.37) | 22 (15.38) | 20 (13.99) | |
| HS | 56 (39.16) | 39 (27.27) | 17 (11.89) | |
| > HS | 45 (31.47) | 31 (21.68) | 14 (9.79) | |
| Race, n (%) | 0.75 | |||
| Caucasian | 122 (92.42) | 78 (59.09) | 44 (33.33) | |
| African American | 8 (6.06) | 6 (4.55) | 2 (1.52) | |
| Other | 2 (1.52) | 1 (0.76) | 1 (0.76) | |
| GCS score (best in 24 h), median (IQR) | 8 (4) | 8 (4) | 7.5 (4) | 0.62 |
| Non-brain injury severity score, median (IQR) | 26 (15) | 26 (17) | 29 (16) | 0.37 |
| Length of hospital stay, median (IQR), d | 12 (9) | 19 (14) | 20.5 (18) | 0.1 |
| Mechanism of injury, n (%) | 0.31 | |||
| Motor vehicle accident | 48 (36.09) | 35 (26.32) | 13 (9.77) | |
| Motorcycle accident | 30 (22.56) | 16 (12.03) | 14 (10.53) | |
| Fall/jump | 35 (26.32) | 24 (18.05) | 11 (8.27) | |
| Off-road vehicle | 10 (7.52) | 5 (3.76) | 5 (3.76) | |
| Bicycle | 4 (3.01) | 3 (2.26) | 1 (0.75) | |
| Other | 6 (4.51) | 2 (1.50) | 4 (3.01) | |
| Radiographic injury type, n (%) | ||||
| Subdural hematoma | 88 (69.29) | 53 (41.73) | 35 (27.56) | 0.07 |
| Subarachnoid hemorrhage | 83 (65.87) | 49 (38.89) | 34 (26.98) | 0.05 |
| Diffuse axonal injury | 13 (10.32) | 11 (8.73) | 2 (1.59) | 0.14 |
| Epidural hemorrhage | 27 (21.43) | 19 (15.08) | 8 (6.35) | 0.65 |
| Contusion | 73 (57.94) | 47 (37.30) | 26 (20.63) | 1.0 |
| Intraventricular hemorrhage | 40 (31.75) | 27 (21.43) | 13 (10.32) | 0.84 |
| Intraparenchymal hemorrhage | 63 (50.00) | 43 (34.13) | 20 (15.87) | 0.58 |
| Midline shift | 42 (36.84) | 27 (23.68) | 15 (13.16) | 0.68 |
Italicized values reflect trends between groups at the p < 0.1 level.
TBI, traumatic brain injury; PHH, persistent hypogonadotropic hypogonadism; BMI, body mass index; IQR, interquartile range.