Table 1 Clinical characteristics of injured patients: first academic quartile (April–June) versus second to fourth quartile (July–March)
|  | All (n = 20,945) | April–Junea (n = 5,282) | July–Marchb (n = 15,663) | p |
|---|---|---|---|---|
Age, years | 48.8 ± 26.8 | 47.0 ± 27.2 | 49.4 ± 26.6 | < 0.001 |
Male | 12,304 (58.7) | 3,200 (60.6) | 9,104 (58.1) | 0.002 |
Admission phase | Â | Â | Â | 0.443 |
 2002–2005 | 5687 (27.2) | 1426 (27.0) | 4261 (27.2) |  |
 2006–2009 | 5477 (26.1) | 1412 (26.7) | 4065 (26.0) |  |
 2010–2013 | 4984 (23.8) | 1271 (24.1) | 3713 (23.7) |  |
 2014–2018 | 4797 (22.9) | 1173 (22.2) | 3624 (23.1) |  |
Trauma etiology | Â | Â | Â | 0.359 |
 Blunt | 19,912 (95.1) | 5009 (94.8) | 14,903 (95.1) |  |
 Penetrating | 1033 (4.9) | 273 (5.2) | 760 (4.9) |  |
Anatomical severity | Â | Â | Â | Â |
 ISS | 7.2 ± 10.9 | 7.2 ± 11.3 | 7.3 ± 10.8 | 0.138 |
Physiological severity | ||||
 GCS score |  |  |  | 0.205 |
  13–15 | 19,366 (92.5) | 4884 (92.5) | 14,482 (92.5) |  |
  9–12 | 527 (2.5) | 136 (2.6) | 391 (2.5) |  |
  6–8 | 287 (1.4) | 86 (1.6) | 201 (1.3) |  |
  4–5 | 157 (0.7) | 33 (0.6) | 124 (0.8) |  |
  3 | 608 (2.9) | 143 (2.7) | 465 (3.0) |  |
 SBP, mmHg |  |  |  | 0.686 |
  > 89 | 20,091 (95.9) | 5076 (96.1) | 15,015 (95.9) |  |
  76–89 | 213 (1.0) | 47 (0.9) | 166 (1.1) |  |
  50–75 | 205 (1.0) | 50 (0.9) | 155 (1.0) |  |
  1–49 | 436 (2.1) | 109 (2.1) | 327 (2.1) |  |
 Respiratory rate, breaths/min |  |  |  | 0.971 |
  > 29 | 19,897 (95.0) | 5023 (95.1) | 14,874 (95.0) |  |
  10–29 | 592 (2.8) | 147 (2.8) | 445 (2.8) |  |
  6–9 | 50 (0.2) | 14 (0.3) | 36 (0.2) |  |
  1–5 | 9 (0.04) | 2 (0.03) | 7 (0.04) |  |
  0 | 397 (1.9) | 96 (1.8) | 301 (1.9) |  |
RTS | 7.55 ± 1.21 | 7.56 ± 1.19 | 7.55 ± 1.22 | 0.768 |
Doctor car system dispatched | 2357 (11.3) | 618 (11.7) | 1739 (11.1) | 0.235 |
Off-hours presentationb | 12,424 (59.3) | 3248 (61.5) | 9176 (58.6) | < 0.001 |
Emergency surgery | 3007 (14.4) | 757 (14.3) | 2250 (14.4) | 0.952 |
Emergency ETI | 1253 (6.0) | 315 (6.0) | 938 (6.0) | 0.947 |