Table 1. Patient Characteristics by Year.
| Characteristic | Patients, No. (%) | P value | |
|---|---|---|---|
| Jan 1-Jun 7, 2019 (n = 6937) | Jan 1-Jun 7, 2020 (n = 6777) | ||
| Age, median (IQR), y | 42 (28-60) | 42 (28-61) | .16 |
| Sex | |||
| Men | 5112 (73.7) | 5100 (75.3) | .02 |
| Women | 1825 (26.3) | 1677 (24.7) | |
| Race | |||
| White | 2129 (30.7) | 2013 (29.7) | .10 |
| Black | 1165 (16.8) | 1096 (16.2) | |
| Hispanic | 2844 (41.0) | 2921 (43.1) | |
| Asian | 417 (6.0) | 359 (5.3) | |
| Othera | 333 (4.8) | 333 (4.9) | |
| Unknown | 49 (0.7) | 55 (0.8) | |
| Mechanism of injury | |||
| Penetrating | .03 | ||
| Total | 1065 (15.4) | 1065 (15.7) | |
| GSW | 504 (7.3) | 485 (7.2) | |
| SW | 571 (8.2) | 646 (9.5) | |
| Animal bite | 23 (0.3) | 24 (0.4) | |
| Blunt | |||
| Total | 5528 (79.7) | 5309 (78.3) | |
| MVC | 1574 (22.7) | 1461 (21.6) | |
| MCC | 606 (8.7) | 589 (8.7) | |
| AVP | 1512 (21.8) | 1325 (19.6) | |
| Fall | 1804 (26.0) | 1811 (26.7) | |
| Assault | 419 (6.0) | 418 (6.2) | |
| Other | 344 (5.0) | 403 (6.0) | |
| AIS ≥3 | |||
| Head | 1131 (16.3) | 1119 (16.5) | .74 |
| Chest | 1006 (14.5) | 994 (14.7) | .78 |
| Abdomen | 361 (5.2) | 382 (5.6) | .26 |
| Extremity | 746 (10.8) | 735 (10.9) | .86 |
| ISS | |||
| Median (IQR) | 5 (2-13) | 5 (2-13) | .95 |
| ISS >15 | 1276 (18.4) | 1338 (19.7) | .04 |
| Field vital signs | |||
| SBP <90 mm Hg | 342 (5.2) | 372 (5.8) | .17 |
| HR >120 bpm | 527 (8.0) | 583 (9.0) | .04 |
| GCS <9 | 537 (8.2) | 535 (8.2) | .93 |
| ED vitals | |||
| SBP <90 mm Hg | 249 (3.6) | 250 (3.7) | .77 |
| HR >120 bpm | 572 (8.3) | 623 (9.2) | .05 |
| GCS <9 | 494 (7.2) | 500 (7.4) | .58 |
| Level 1 trauma center | 3188 (46.0) | 3207 (47.3) | .11 |
| Positive alcohol screen, No./total No. (%) | 1678/5544 (30.3) | 1640/5360 (30.6) | .71 |
| Positive toxicology screen, No./total No. (%) | |||
| Cannabinoids | 801/6913 (11.6) | 988/6750 (14.6) | <.001 |
| Amphetamines | 560/6913 (8.1) | 669/6750 (9.9) | <.001 |
| Cocaine | 227/6913 (3.3) | 238/6750 (3.5) | .43 |
Abbreviations: AIS, Abbreviated Injury Scale; AVP, automobile vs pedestrian; bpm, beats per minute; ED, emergency department; GCS, Glasgow Coma Scale; GSW, gunshot wound; HR, heart rate; ISS, Injury Severity Score; MCC, motorcycle collision; MVC, motor vehicle collision; SBP, systolic blood pressure; SW, stab wound.
a
Other race includes Native American, Alaskan Native, Pacific Islander, Hawaiian, or any race not classified in the Los Angeles County Emergency Medical Services Trauma Data Dictionary.