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Table 2 Estimated number of head trauma treated in U.S. EDs incurred during traffic-related injuries with 95 % CI

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

Sex   Precipitating cause of injury (PCI)  
Male   MV-occupant Motorcyclist Pedal cyclist Pedestrian Other transport
  Estimated ED visits % of all MV-occupant (95 % CI) Estimated ED visits % of all motorcyclist (95 % CI) Estimated ED visits % of all pedal cyclist (95 % CI) Estimated ED visits % of all pedestrian (95 % CI) Estimated ED visits % of all other transport (95 % CI)
0–11 51,387 3.6 (3.0–4.2) a a 13,565 9.7 (7.3–12.2) 9740 8.6 (6.2–11.0) 2476 6.8 (4.4–9.3)
12–17 69,985 4.9 (4.3–5.6) 3,760 3.4 (2.3–4.4) 21,672 15.5 (10.0–21.1) 8943 7.9 (6.7–9.1) 3975 11.0 (8.1–13.9)
18–24 188,740 13.3 (12.1–14.5) 20,160 18.0 (15.7–20.4) 17,415 12.5 (9.0–16.0) 10,819 9.5 (8.1–11.0) 2741 7.6 (5.0–10.2)
25–44 233,474 16.5 (15.4–17.5) 36,201 32.4 (29.8–35.0) 26,270 18.8 (16.9–20.8) 18,420 16.2 (14.5–18.0) 4840 13.4 (10.4–16.3)
45–64 123,525 8.7 (8.2–9.2) 29,233 26.2 (22.9–29.4) 25,797 18.5 (15.9–21.1) 15,590 13.7 (10.8–16.7) 3566 9.9 (6.7–13.1)
65+ 47,796 3.4 (3.0–3.7) 4,588 4.1 (3.0–5.2) 7818 5.6 (3.7–7.5) 4971 4.4 (3.4–5.4) 2424 6.7 (4.5–8.9)
Total 714,907   95,052   112,537   68,483   20,022  
Female   MV-occupant Motorcyclist Pedal cyclist Pedestrian Other transport
  Estimated ED visits % of all MV-occupant (95 % CI) Estimated ED visits % of all motorcyclist (95 % CI) Estimated ED visits % of all pedal cyclist (95 % CI) Estimated ED visits % of all pedestrian (95 % CI) Estimated ED visits % of all other transport (95 % CI)
0–11 44,986 3.2 (2.7–3.6) a a 4351 3.1 (1.7–4.6) 4482 3.9 (3.2–4.7) 1322 3.7 (1.9–5.4)
12–17 81,698 5.8 (5.1–6.4) a a 3301 2.4 (1.4–3.3) 5403 4.8 (3.7–5.8) 2115 5.8 (3.5–8.2)
18–24 176,821 12.5 (11.6–13.3) 2,599 2.3 (1.8–2.9) 5051 3.6 (1.8–5.5) 6762 6.0 (5.0–6.9) 2099 5.8 (4.3–7.3)
25–44 218,453 15.4 (14.3–16.5) 6,639 5.9 (4.3–7.6) 7482 5.4 (3.4–7.3) 11,638 10.2 (8.2–12.3) 3686 10.2 (7.7–12.7)
45–64 130,058 9.2 (8.3–10.0) 5,766 5.2 (4.1–6.3) 5228 3.7 (2.2–5.3) 10,509 9.3 (7.5–11.0) 3927 10.9 (8.6–13.1)
65+ 50,281 3.5 (3.1–3.9) a a 1636 1.2 (0.5–1.8) 5763 5.1 (3.7–6.4) 2979 8.2 (5.8–10.7)
Total 702,297   16,396   27,049   44,557   16,128  
  1. aEstimate is potentially unstable since unweighted cases <20, national estimate <1,200 cases, or coefficient of variation >30.0 %. No CI is provided