Table 1.
Demographic characteristics of the patients in relation to alcohol use
| Characteristics | Total (n = 95,807) | Alcohol-unrelated (n = 79,558) | Alcohol-related (n = 16,249) | P-valuea) |
|---|---|---|---|---|
| Age (yr) | < 0.01 | |||
| 19−29 | 23,813 (24.9) | 19,258 (24.2) | 4,555 (28.0) | |
| 30−44 | 31,613 (33.0) | 25,721 (32.3) | 5,892 (36.3) | |
| 45−64 | 29,048 (30.3) | 24,012 (30.2) | 5,036 (31.0) | |
| ≥ 65 | 11,333 (11.8) | 10,567 (13.3) | 766 (4.7) | |
| Mean (standard deviation) | 43.0 (16.5) | 43.7 (17.0) | 39.8 (13.3) | < 0.01 |
| Sex, male | 54,798 (57.2) | 42,487 (53.4) | 12,311 (75.8) | < 0.01 |
| Past medical history | ||||
| Diabetes mellitus | 3,503 (3.7) | 3,051 (3.8) | 452 (2.8) | < 0.01 |
| Hypertension | 7,403 (7.7) | 6,599 (8.3) | 804 (4.9) | < 0.01 |
| Time from injury to ED arrival (min) | 61.0 (32.0−331.0) | 64.0 (32.0−395.0) | 60.0 (32.0−128.0) | < 0.01 |
| Time of visit, daytime | 44,894 (46.9) | 41,310 (51.9) | 3,584 (22.1) | < 0.01 |
| Day of visit, weekday | 59,033 (61.6) | 48,772 (61.3) | 10,261 (63.1) | < 0.01 |
| Season of visit | < 0.01 | |||
| Spring | 19,723 (20.6) | 16,407 (20.6) | 3,316 (20.4) | |
| Summer | 28,502 (29.7) | 23,683 (29.8) | 4,819 (29.7) | |
| Fall | 28,228 (29.5) | 23,773 (29.9) | 4,455 (27.4) | |
| Winter | 19,354 (20.2) | 15,695 (19.7) | 3,659 (22.5) | |
| Injury mechanism | < 0.01 | |||
| Motor vehicle injury | 17,945 (18.7) | 16,551 (20.8) | 1,394 (8.6) | |
| Fall/slip | 23,963 (25.0) | 18,037 (22.7) | 5,926 (36.5) | |
| Cut/pierce | 15,030 (15.7) | 13,214 (16.6) | 1,816 (11.2) | |
| Collison | 22,966 (24.0) | 16,521 (20.8) | 6,445 (39.7) | |
| Miscellaneous | 15,903 (16.6) | 15,235 (19.1) | 668 (4.1) | |
| Emergency medical service use | 18,352 (19.2) | 12,676 (16.0) | 5,676 (35.1) | < 0.01 |
| Glasgow Coma Scale < 15 | 774 (0.8) | 295 (0.4) | 479 (3.1) | < 0.01 |
| EMR-ISS > 8 | 12,810 (13.4) | 9,972 (12.6) | 2,838 (17.5) | < 0.01 |
| Intracranial injury | 264 (0.3) | 2,001 (0.3) | 63 (0.4) | < 0.01 |
| ED length of stay (min) | 97.0 (59.0−162.0) | 94.0 (58.0−153.0) | 119.0 (71.0−213.0) | < 0.01 |
Values are presented as number (%) or median (interquartile ranges) unless otherwise indicated.
ED, emergency department; EMR-ISS, Excess Mortality Ratio-adjusted Injury Severity Score.
a)
P-values were calculated by Student t-test, Wilcoxon rank-sum test, or chi-square test, as appropriate.