Table 1.
Demographics of sober and +BAC cohorts.
| Population | 2 lactates and initial lactate >=3
|
||
|---|---|---|---|
| Sober | +BAC | p-value | |
| N | 2236 | 1674 | |
| Age, mean (SD) | 41.0 (19.9) | 36.6 (14.7) | 0.0001 |
| Male sex, count (percent) | 1698 (75.9) | 1396 (83.4) | 0.0001 |
| White | 1227 (55.1) | 817 (48.8) | 0.0006 |
| Black | 854 (38.4) | 747 (44.6) | |
| Hispanic | 46 (2.1) | 47 (2.8) | |
| Other | 100 (4.5) | 58 (3.5) | |
| Injury severity, count (percent) | |||
| <9 | 607 (27.1) | 566 (33.8) | 0.0001 |
| 9 <ISS <16 | 530 (23.7) | 394 (23.5) | |
| 16 <ISS <25 | 403 (18.0) | 291 (17.4) | |
| ISS >25 | 668 (29.9) | 405 (24.2) | |
| Missing data | 28 (1.3) | 18 (1.1) | |
| Injury mechanism, count (percent) | |||
| MVC | 984 (44.0) | 675 (40.3) | 0.0001 |
| Falls | 435 (19.5) | 291 (17.4) | |
| Stabbing | 180 (8.1) | 236 (14.1) | |
| GSW | 315 (14.1) | 157 (9.4) | |
| Assault | 158 (7.1) | 212 (12.7) | |
| Other | 164 (7.3) | 103 (6.2) | |
| Blunt | 1658 (74.2) | 1238 (74.0) | 0.4 |
| Penetrating | 506 (22.6) | 402 (24.0) | |
| Missing data | 72 (3.2) | 34 (2.0) | |
| Abdominal abbreviated injury score, count (percent) | |||
| 0 | 1661 (74.3) | 1152 (68.8) | 0.9 |
| 1 | 226 (10.1) | 189 (11.3) | |
| 2 | 103 (4.6) | 109 (6.5) | |
| 3 | 108 (4.8) | 112 (6.7) | |
| 4 | 104 (4.7) | 79 (4.7) | |
| 5 | 34 (1.5) | 33 (2.0) | |
| Initial lactate (mmol/L), mean (SD) | 5.8 (3.3) | 5.4 (2.7) | 0.0001 |
| Relative lactate clearance, percent (SD) | 47.6 (33.5) | 37.8 (31.1) | 0.0001 |
| Minutes between first and second lactate, mean (SD) | 304.5 (241.6) | 321.0 (219.1) | 0.04 |
| Mortality at 24 h, count (percent) | 87 (3.9) | 24 (1.4) | 0.0001 |