Table 2 Sample characteristics
Characteristic | No opportunity for improvement, N = 4,8821 | Opportunity for improvement, N = 3001 | Overall, N = 5,1821 |
|---|---|---|---|
Sex | |||
Male | 3,309 (68%) | 211 (70%) | 3,520 (68%) |
Female | 1,573 (32%) | 89 (30%) | 1,662 (32%) |
Age (years) | |||
Older adolescents (15–19) | 415 (8.5%) | 15 (5.0%) | 430 (8.3%) |
Young adults (20–24) | 500 (10%) | 34 (11%) | 534 (10%) |
Adults (25–59) | 2,670 (55%) | 135 (45%) | 2,805 (54%) |
Older adults (60–100) | 1,297 (27%) | 116 (39%) | 1,413 (27%) |
Intubation | |||
None | 4,459 (91%) | 247 (82%) | 4,706 (91%) |
Pre-hospital | 151 (3.1%) | 12 (4.0%) | 163 (3.1%) |
Emergency department | 272 (5.6%) | 41 (14%) | 313 (6.0%) |
Highest hospital care level | |||
Emergency Department | 1,116 (23%) | 13 (4.3%) | 1,129 (22%) |
General Ward | 1,980 (41%) | 67 (22%) | 2,047 (40%) |
Operating Theater | 867 (18%) | 92 (31%) | 959 (19%) |
High Dependency Unit | 184 (3.8%) | 28 (9.3%) | 212 (4.1%) |
Critical Care Unit | 735 (15%) | 100 (33%) | 835 (16%) |
Respiratory rate | |||
10–29 | 4,504 (92%) | 267 (89%) | 4,771 (92%) |
>29 | 152 (3.1%) | 19 (6.3%) | 171 (3.3%) |
6–9 | 41 (0.8%) | 0 (0%) | 41 (0.8%) |
1–5 | 15 (0.3%) | 1 (0.3%) | 16 (0.3%) |
0 | 23 (0.5%) | 0 (0%) | 23 (0.4%) |
Missing | 147 (3.0%) | 13 (4.3%) | 160 (3.1%) |
Systolic blood pressure | |||
>89 | 4,766 (98%) | 284 (95%) | 5,050 (97%) |
76–89 | 63 (1.3%) | 9 (3.0%) | 72 (1.4%) |
50–75 | 29 (0.6%) | 7 (2.3%) | 36 (0.7%) |
1–49 | 1 (< 0.1%) | 0 (0%) | 1 (< 0.1%) |
0 | 11 (0.2%) | 0 (0%) | 11 (0.2%) |
Missing | 12 (0.2%) | 0 (0%) | 12 (0.2%) |
Glasgow Coma Scale | |||
13–15 | 4,304 (88%) | 250 (83%) | 4,554 (88%) |
9–12 | 195 (4.0%) | 20 (6.7%) | 215 (4.1%) |
3–8 | 226 (4.6%) | 19 (6.3%) | 245 (4.7%) |
Missing | 157 (3.2%) | 11 (3.7%) | 168 (3.2%) |
Working hours2 | |||
Yes | 2,002 (41%) | 120 (40%) | 2,122 (41%) |
No | 2,880 (59%) | 180 (60%) | 3,060 (59%) |
Weekend3 | |||
Yes | 1,577 (32%) | 94 (31%) | 1,671 (32%) |
No | 3,305 (68%) | 206 (69%) | 3,511 (68%) |
Injury Severity Score | |||
Mild < 9 | 2,593 (53%) | 48 (16%) | 2,641 (51%) |
Moderate 9–15 | 1,335 (27%) | 82 (27%) | 1,417 (27%) |
Severe 16–25 | 545 (11%) | 98 (33%) | 643 (12%) |
Profound > 25 | 409 (8.4%) | 72 (24%) | 481 (9.3%) |
Time to first CT | |||
0–30 | 1,911 (39%) | 95 (32%) | 2,006 (39%) |
No CT | 510 (10%) | 24 (8.0%) | 534 (10%) |
31–60 | 1,087 (22%) | 85 (28%) | 1,172 (23%) |
61–90 | 524 (11%) | 38 (13%) | 562 (11%) |
>90 | 850 (17%) | 58 (19%) | 908 (18%) |
Survival after 30 days | |||
Alive | 4,694 (96%) | 285 (95%) | 4,979 (96%) |
Dead | 188 (3.9%) | 15 (5.0%) | 203 (3.9%) |