Demographics and clinical characteristics by intent (N=1008)
| Characteristics Median (25th–75th) or N (%) | Overall | Interpersonal violence N=632 | Unintentional N=237 | Intentionally self-inflicted N=26 | Undetermined N=113 | P value |
| Age (years) | 14 (10.0–16.4) | 15 (12–17) | 11 (6–14) | 15 (14–16) | 14 (8–16) | <0.001 |
| Age groups | <0.001 | |||||
| 0–4 | 126 (13) | 54 (9) | 54 (22) | 0 (0) | 18 (16) | |
| 5–9 | 116 (12) | 54 (9) | 44 (19) | 1 (4) | 17 (15) | |
| 10–13 | 208 (21) | 112 (17) | 68 (29) | 6 (23) | 22 (19) | |
| 14–18 | 558 (55) | 412 (65) | 71 (30) | 19 (73) | 56 (50) | |
| Medicaid | 672 (67) | 418 (66) | 166 (71) | 16 (52) | 72 (65) | 0.149 |
| Male | 778 (77) | 493 (78) | 169 (71) | 25 (96) | 91 (81) | 0.012 |
| Race/ethnicity | <0.001 | |||||
| Black | 684 (68) | 445 (71) | 148 (63) | 12 (46) | 79 (71) | |
| White | 120 (12) | 56 (9) | 40 (17) | 12 (46) | 12 (11) | |
| Asian | 13 (1) | 11 (2) | 2 (1) | 0 (0) | 0 (0) | |
| Hispanic | 118 (12) | 76 (12) | 26 (11) | 1 (4) | 15 (13) | |
| Multiracial | 24 (2) | 15 (2) | 5 (2) | 1 (4) | 3 (3) | |
| Unknown | 42 (5) | 25 (4) | 14 (6) | 0 (0) | 3 (3) | |
| ISS* | 0.004 | |||||
| 0–12 | 701 (73) | 447 (72) | 172 (77) | 9 (38) | 73 (73) | |
| 13–25 | 169 (17) | 102 (17) | 36 (16) | 10 (42) | 21 (21) | |
| 26–50 | 83 (9) | 60 (10) | 12 (5) | 5 (21) | 6 (6) | |
| 51–75 | 11 (1) | 9 (1) | 2 (1) | 0 (0) | 0 (0) |
Anatomic scoring system that provides an overall score for patients with multiple injuries.
*Missing: ISS, n=44.
†Bold indicates statistical significance.
ISS, Injury Severity Score.