Overall elderly (n = 1949) | Non-antihypertensive group (n = 951) | Antihypertensive group (n = 998) | P value | |
---|---|---|---|---|
Age (IQR), yr | 76.0 (70.0–81.0) | 75.0 (69.0–80.0) | 77.0 (71.0–82.0) | < 0.001 |
Male sex, n (%) | 1002 (51.4) | 539 (56.7) | 463 (46.4) | < 0.001 |
Comorbidities, n (%) | ||||
Diabetes | 529 (27.1) | 167 (17.6) | 362 (36.3) | < 0.001 |
Cerebrovascular accident | 271 (13.9) | 92 (9.7) | 179 (17.9) | < 0.001 |
Congestive heart failure | 68 (3.5) | 29 (3.0) | 39 (3.9) | 0.575 |
Chronic renal disease | 127 (6.5) | 34 (3.6) | 93 (9.3) | < 0.001 |
Traumatic brain injury, n (%) | 96 (4.9) | 57 (6.0) | 39 (3.9) | 0.033 |
Prehospital response time (IQR), min | 9.0 (6.0–14.0) | 9.0 (7.0–14.0) | 9.0 (6.0–15.0) | 0.912 |
Total prehospital time (IQR), min | 24.0 (17.5–33.0) | 25.0 (17.5–34.0) | 23.0 (17.5–32.0) | 0.498 |
Prehospital IV hydration, n (%) | 57 (2.9) | 38 (4.0) | 19 (1.9) | 0.014 |
Physiological parameters (IQR) | ||||
At the injury scene | ||||
SBP, mmHg | 140.0 (121.0–160.0) | 130.0 (120.0–153.0) | 140.0 (120.0–160.0) | 0.048 |
HR, beats per min | 80.0 (72.0–90.0) | 80.0 (72.0–90.0) | 82.0 (72.0–93.5) | 0.414 |
SI | 0.59 (0.51–0.71) | 0.60 (0.51–0.70) | 0.59 (0.50–0.71) | 0.571 |
At ED arrival | ||||
SBP, mmHg | 147.0 (124.0–165.0) | 134.0 (121.0–162.0) | 149.0 (128.0–168.0) | < 0.001 |
HR, beats per min | 82.0 (71.0–94.0) | 82.0 (71.0–95.0) | 82.0 (71.0–94.0) | 0.603 |
SI | 0.57 (0.47–0.69) | 0.58 (0.49–0.72) | 0.56 (0.47–0.68) | 0.001 |
GCS | 15.0 (14.0–15.0) | 15.0 (15.0–15.0) | 15.0 (14.0–15.0) | 0.131 |
Mechanism of injury, n (%) | 0.433 | |||
Blunt | 1916 (98.3) | 933 (98.1) | 983 (98.5) | |
Penetrating | 33 (1.7) | 18 (1.9) | 15 (1.5) | |
ISS (IQR) | 9.0 (5.0–14.0) | 9.0 (5.0–16.0) | 9.0 (5.0–13.0) | 0.195 |
RTS (IQR) | 12.0 (11.0–12.0) | 12.0 (12.0–12.0) | 12.0 (11.0–12.0) | 0.004 |
Clinical course and interventions | ||||
Length of stay in ICU (IQR), day | 0 (0–0.67) | 0 (0–0.65) | 0 (0–0.67) | 0.932 |
Transfusion, n (%) | 443 (22.7) | 210 (22.1) | 233 (23.3) | 0.794 |
Massive transfusion, n (%) | 56 (2.9) | 37 (3.9) | 19 (1.9) | 0.009 |
30-day mortality, n (%) | 149 (7.6) | 89 (9.4) | 60 (6.0) | 0.005 |