Table 1.
Patient Characteristics for the Analysis Sample, NTDB 2008–2009
| Died within 8 h (n=1,943) |
Survived 8 h (n=83,384) |
Total (n=85,327) |
|
|---|---|---|---|
| Died in hospital | 1,943 | 1,076 (1.3%) | 3,019 (3.5%) |
| Died within 8 h | 1,943 | 0 | 1,943 (2.3%) |
| Age >=65 y | 400 (20.6%) | 17,215 (20.6%) | 17,615 (20.6%) |
| Firearm injury | 622 (32.0%) | 6,238 (7.5%) | 6,860 (8.0%) |
| ISS 25–75 | 1,214 (62.5%) | 10,516 (12.6%) | 11,730 (13.7%) |
| Head AIScat | |||
| AIS 1–2 | 129 (6.6%) | 12,589 (15.1%) | 12,718 (14.9%) |
| AIS 3–4 | 436 (22.4%) | 26,221 (31.4%) | 26,657 (31.2%) |
| AIS 5–6 | 643 (33.1%) | 2,253 (2.7%) | 2,896 (3.4%) |
| Abdomen AIScat | |||
| AIS 1–2 | 372 (19.1%) | 16,066 (19.3%) | 16,438 (19.3%) |
| AIS 3–4 | 550 (28.3%) | 6,469 (7.8%) | 7,019 (8.2%) |
| AIS 5–6 | 72 (3.7%) | 553 (0.7%) | 625 (0.7%) |
| Prehospital times | |||
| 0–30 min | 757 (39.0%) | 17,669 (21.2%) | 18,426 (21.6%) |
| 31–45 min | 626 (32.2%) | 28,829 (34.6%) | 29,455 (34.5%) |
| 46–60 min | 275 (14.2%) | 19,366 (23.2%) | 19,641 (23.0%) |
| 61–90 min | 227 (11.7%) | 13,621 (16.3%) | 13,848 (16.2%) |
| >90 min | 58 (3.0%) | 3,899 (4.7%) | 3,957 (4.6%) |
| Prehospital physiology | |||
| Pulse <=40 | 153 (7.9%) | 359 (0.4%) | 512 (0.6%) |
| BP 0 | 247 (12.7%) | 281 (0.3%) | 528 (0.6%) |
| BP 1–89 mmHg | 337 (17.3%) | 3,446 (4.1%) | 3,783 (4.4%) |
| GCSm 1 | 1,041 (53.6%) | 3,805 (4.6%) | 4,846 (5.7%) |
| GCSm 2–5 | 357 (18.4%) | 8,218 (9.9%) | 8,575 (10.0%) |
| Admission physiology | |||
| Pulse <=40 | 81 (4.2%) | 228 (0.3%) | 309 (0.4%) |
| BP 0 | 203 (10.4%) | 95 (0.1%) | 298 (0.3%) |
| BP 1–89 mmHg | 576 (29.6%) | 3,086 (3.7%) | 3,662 (4.3%) |
| GCSm 1 | 1,355 (69.7%) | 5,813 (7.0%) | 7,168 (8.4%) |
| GCSm 2–5 | 234 (12.0%) | 5,742 (6.9%) | 5,976 (7.0%) |
ISS, Injury Severity Score (maximum 75); AIScat, Maximum Abbreviated Injury Score, categorized (maximum 6); BP, blood pressure (systolic); GCSm, Glasgow Coma Scale, motor component (minimum 1, normally 6).