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Table 1 Rates of ED presentations for TBI in North Queensland (2007–2015) per 100,000 population

From: Incidence of emergency department presentations for traumatic brain injury in Indigenous and non-Indigenous residents aged 15–64 over the 9-year period 2007–2015 in North Queensland, Australia

Selected variables Presentations Population at risk Rate (100,000 population) Incidence rate ratio (RR)
Rate (95% CIs) RR (95% CIs) P
All Traumatic Brain Injuries 3083 3,151,154 97.8 (94.4–101.3)   
Indigenous status
 Non-Indigenous 2375 2,753,418 86.3 (82.8–89.7)   
 Indigenous 662 397,736 166.4 (153.8–179.1) 1.93 (1.77–2.10) <0.001
 Unknown 46     
Sex
 Female 918 1,553,724 59.1 (55.3–62.9)   
 Male 2165 1,597,430 135.5 (129.8–141.2) 2.29 (2.12–2.48) <0.001
Age categories
 15–24 1187 655,073 181.2 (170.9–191.5)   
 25–34 617 655,420 94.1 (86.7–101.6) 0.52 (0.47–0.57) <0.001
 35–44 505 671,141 75.2 (68.7–81.8) 0.42 (0.37–0.46) <0.001
 45–54 432 649,583 66.5 (60.2–72.8) 0.37 (0.33–0.41) <0.001
 55–64 342 519,937 65.8 (58.8–72.7) 0.36 (0.32–0.41) <0.001
Year of ED presentation
 2007 307 328,306 93.5 (83.0–104.0)   
 2008 338 337,217 100.2 (89.5–110.9) 1.07 (0.92–1.25) 0.400
 2009 343 344,501 99.6 (89.0–110.1) 1.06 (0.91–1.24) 0.448
 2010 322 349,363 92.2 (82.1–102.2) 0.99 (0.84–1.15) 0.888
 2011 303 353,502 85.7 (76.1–95.4) 0.92 (0.78–1.07) 0.301
 2012 285 356,850 79.9 (70.6–89.1) 0.85 (0.73–1.00) 0.060
 2013 347 359,589 96.5 (86.3–106.7) 1.03 (0.89–1.20) 0.717
 2014 399 360,815 110.6 (99.7–121.4) 1.18 (1.02–1.37) 0.030
 2015 439 361,011 121.6 (110.2–133.0) 1.30 (1.12–1.50) 0<.001
Remoteness (ABS ARIA classification)
 3. Outer Regional 2491 2,738,822 91.0 (87.4–94.5)   
 4. Remote 465 252,515 184.1 (167.4–200.9) 2.02 (1.83–2.24) <0.001
 5. Very Remote 127 159,817 79.5 (65.6–93.3) 0.87 (0.73–1.04) 0.149
Socio-Economic Indexes for Areas (SEIFA) decile
 1–2 1214 757,007 160.4 (151.3–169.4)   
 3–4 883 1,049,982 84.1 (78.5–89.6) 0.52 (0.48–0.57) <0.001
 5–6 349 563,371 61.9 (55.4–68.4) 0.39 (0.34–0.44) <0.001
 7–8 467 524,536 89.0 (81.0–97.1) 0.56 (0.50–0.62) <0.001
 9–10 170 256,258 66.3 (56.4–76.3) 0.41 (0.35–0.49) 0.000