Table 4.
Characteristics of head trauma associated with specific intents treated in U.S. EDs
| Description | Cases (n) | National estimate (%)a | 95 % confidence interval |
|---|---|---|---|
| Intent | |||
| Assault | 22,010 | 1,209,403 (95.9) | 923,354–1,495,451 |
| Legal intervention | 722 | 38,238 (1.1) | 27,960–48,517 |
| Self-harm | 241 | 13,668 (3.0) | 7,513–19,823 |
| Perpetrator relationship in assault | |||
| Multiple | 4421 | 230,032 (38.0) | 158,331–301,733 |
| Friend/acquaintance | 2520 | 130,650 (21.6) | 100,598–160,702 |
| Spouse/partner | 2130 | 127,958 (21.1) | 95,647–160,269 |
| Other relative | 911 | 48,894 (8.1) | 37,968–59,819 |
| Stranger | 804 | 44,933 (7.4) | 26,666–63,199 |
| Other specified | 531 | 23,771 (3.9) | 17,800–29,742 |
| Reason for assault | |||
| Altercation | 4193 | 225,363 (81.2) | 176,632–274,095 |
| Robbery/burglary | 653 | 35,251 (12.7) | 21,057–49,445 |
| Other specified | 394 | 16,928 (6.1) | 7,685–26,172 |
aPercentages may not total to 100 % due to rounding