Characteristics, n (%) | Period 1, N = 518 (50%) | Period 2, N = 507 (49%) | P-value |
---|---|---|---|
Sex, (male) | 373 (72%) | 371 (73%) | 0.68 |
Race (white) (missing 58) | Â | Â | 0.15 |
 White | 343 (71%) | 329 (68%) |  |
 Black | 106 (22%) | 109 (22%) |  |
 Other | 32 (7%) | 49 (10%) |  |
Age range, years | Â | Â | 0.44 |
 18–20 | 21 (4%) | 31 (6%) |  |
 21–34 | 162 (32%) | 152 (30%) |  |
 35–64 | 244 (47%) | 243 (48%) |  |
  ≥ 65 | 91 (18%) | 81 (16%) |  |
Mechanism of injury | Â | Â | 0.05 |
 Fall | 167 (32%) | 147 (29%) |  |
 Motor vehicle crash | 132 (25%) | 122 (24%) |  |
 Motorcycle crash | 39 (8%) | 34 (7%) |  |
 Assault | 38 (7%) | 22 (4%) |  |
 Gunshot wound | 51 (10%) | 64 (13%) |  |
 Other | 91 (18%) | 118 (23%) |  |
Injury severity score | Â | Â | 0.37 |
 1–9 | 297 (57%) | 269 (53%) |  |
 10–15 | 92 (18%) | 96 (19%) |  |
  ≥ 16 | 129 (25%) | 142 (28%) |  |
CCI, median (IQR), range | 0 (0–2), (0–7) | 0 (0–2), (0–7) | 0.89 |
Comorbidities | |||
 Mental illness | 76 (15%) | 67 (13%) | 0.50 |
 Alcoholism | 75 (14%) | 130 (26%) | < 0.001 |
 Substance abuse | 59 (11%) | 115 (23%) | < 0.001 |
State | |||
 Colorado | 171 (33%) | 160 (32%) | 0.62 |
 Texas | 72 (14%) | 98 (19%) | 0.02 |
 Missouri | 187 (36%) | 188 (37%) | 0.74 |
 Kansas | 88 (17%) | 61 (12%) | 0.02 |
LOS, median (IQR), days | 3 (2–7) | 3 (2–7) | 0.58 |
ICU stay | 224 (43%) | 192 (38%) | 0.08 |
In-hospital mortality | 23 (4%) | 25 (5%) | 0.70 |