Table 4.
Characteristics by Documentation of Scene Physiology by Emergency Medical Services Personnel
| Complete* | Incomplete* | p Value | |
|---|---|---|---|
| n | 3407 | 1337 | |
| Age (yrs) | 47.7 (0.4) | 51.1 (0.6) | <0.001 |
| Gender (male), n (%) | 2,135 (62.7) | 779 (58.3) | 0.006 |
| Race, n (%) | 0.18 | ||
| White, n (%) | 1878 (76.1) | 516 (79.6) | |
| Black, n (%) | 352 (14.3) | 76 (11.7) | |
| Asian or Pacific Islander, n (%) | 186 (7.5) | 40 (6.2) | |
| Other, n (%) | 53 (2.1) | 16 (1.5) | |
| Mechanism of Injury | <0.001 | ||
| Knife, n (%) | 190 (5.6) | 33 (2.5) | |
| Gunshot, n (%) | 143 (4.2) | 48 (3.6) | |
| MVC, MCC, pedestrian vs. car, n (%) | 1123 (33.0) | 393 (29.4) | |
| Other, n (%) | 1951 (57.3) | 863 (64.5) | |
| ISS, mean, (+/− SE) | 10.7 (0.2) | 12.1 (0.3) | 0.03 |
| maximum AIS, mean, (+/− SE) | 2.7 (0.0) | 2.8 (0.0) | 0.008 |
| Scene GCS, means, (+/− SE) | 13.8 (0.1) | 12.7 (0.2) | 0.001 |
| SBP in ED, mean, (+/− SE) | 142.2 (0.5) | 136.6 (1.0) | <0.001 |
| RR in ED, mean, (+/− SE) | 18.6 (0.1) | 18.2 (0.1) | 0.006 |
| Pulse in ED, mean, (+/− SE) | 90.7 (0.4) | 86.9 (0.7) | <0.001 |
| Mortality, n (%) | 153 (4.5) | 137 (10.3) | <0.001 |
*
Complete, patients for whom scene respiratory rate, pulse, and systolic blood pressure were documented in EMS run sheets; Incomplete, patients who were missing at least one the following: scene pulse, scene systolic blood pressure, scene respiratory rate. MVC, motor vehicle collision; MCC, motorcycle collision; ISS, Injury Severity Score; AIS, Abbreviated Injury Score; GCS, Glasgow Coma Score; SBP, systolic blood pressure; ED, emergency department; RR, respiratory rate.