Cohort characteristics by violent reinjury
| Variable | New violent injury during study period | P value | |
| Yes (n=77) | No (n=921) | ||
| Age, years, median (IQR) | 31 (24–39) | 28 (23–38) | 0.224 |
| Sex, % (n) | 0.002 | ||
| Male | 70 (54) | 84 (775) | |
| Female | 30 (23) | 16 (146) | |
| Race, % (n) | 0.853 | ||
| Black | 68 (52) | 67 (615) | |
| White | 31 (24) | 31 (285) | |
| Other | 1 (1) | 2 (21) | |
| Insurance type, % (n) | 0.003 | ||
| Commercial | 13 (10) | 20 (187) | |
| Government | 65 (50) | 43 (395) | |
| Self-pay | 21 (16) | 33 (306) | |
| Other | 1 (1) | 4 (33) | |
| Primary mechanism of injury, % (n) | 0.005 | ||
| Gunshot wound | 38 (29) | 56 (520) | |
| Stab | 19 (15) | 15 (142) | |
| Assault | 43 (33) | 28 (259) | |
| Injury Severity Score, median (IQR) | 7 (2–13.5) | 9 (4–14) | 0.359 |
| Alcohol screen positive, % (n) | 29 (22) | 26 (238) | 0.6 |
| Drug screen positive, % (n) | 51 (39) | 50 (459) | 0.891 |
| National ADI percentile, median (IQR) | 86 (71–96) | 90 (75–96) | 0.84 |
| History of violent crime, % (n) | 22 (17) | 14 (125) | 0.04 |
| History of violent injury, % (n) | 1 (1) | 1 (13) | 0.005 |
χ2 test and Fisher’s exact test used for categorical variables. Kruskal-Wallis test used for continuous variables. P values of <0.05 are considered statistically significant.
ADI, Area Deprivation Index.