Table 1.
Patient Characteristics
| Variable | 2019 (n = 143) | 2020 (n = 91) | P-value |
|---|---|---|---|
| Age, years | |||
| Median (IQR) | 57 (32–76) | 72 (37–83) | 0.01a |
| Range | 0–99 | 0–98 | |
| <25, n (%) | 25(17.5) | 13 (14.3) | 0.52b |
| 25–50, n (%) | 35 (24.5) | 15 (16.5) | 0.15b |
| 50–75, n (%) | 44 (30.8) | 24 (26.7) | 0.47b |
| >75, n (%) | 39 (27.3) | 39 (42.9) | 0.01b |
| Men, n (%) | 75 (52.4) | 53 (58.2) | 0.38b |
| Use of antithrombotic agents, n (%) | 43 (30.1) | 39 (42.9) | 0.05b |
| Intracranial hemorrhage, n (%) | 4 (2.8) | 3 (3.3) | 0.83b |
| Mechanism of injury, n (%)c | |||
| Falls | 88 (61.5) | 63 (69.2) | 0.23b |
| Bicycle related | 11 (7.7) | 7 (7.7) | 0.9b |
| Motor vehicle traffic | 16 (11.2) | 6 (6.6) | 0.24b |
| Struck by/against | 13 (9.1) | 4 (4.4) | 0.18b |
| Assault | 13 (9.1) | 8 (8.8) | 0.94b |
| Alcohol intoxication, n (%) | 10 (7.0) | 8 (8.8) | 0.62b |
| Classification of head injury, n (%) | |||
| Mild | 138 (96.5) | 90 (98.9) | 0.26b |
| Moderate | 1 (0.7) | 1 (0.7) | 0.75b |
| Severe | 4 (2.8) | 0 (0.0) | 0.11b |
| LOC, n (%)d | 21 (14.7) | 8 (8.8) | 0.17b |
| PTA, n (%)e | 16 (11.2) | 8 (8.8) | 0.52b |
| Anisocoria, n (%) | 2 (1.4) | 0 (100) | 0.26b |
| Vomiting, n (%) | 5 (3.5) | 8 (8.8) | 0.09b |
| Neurological deficit, n (%) | 2 (1.4) | 1 (1.1) | 0.84b |
| Visible injury of the head, n (%) | 99 (69.2) | 71 (78.0) | 0.14b |
| Signs of skull fracture, n (%) | 2 (1.4) | 1 (1.1) | 0.84b |
a
Determined by use of the Mann-Whitney U test; bdetermined by use of the chi-squared test; cmissing n = 5, 2.1%; dmissing n = 14, 6%; emissing n = 7, 3%.
IQR, interquartile range; LOC, loss of consciousness; PTA, post-traumatic amnesia.