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Table 4 Characteristics of head trauma associated with specific intents treated in U.S. EDs

From: Emergency department visits for head trauma in the United States

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

  1. aPercentages may not total to 100 % due to rounding