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Table 1 Demographic and healthcare use characteristics of injured young people and their matched comparison by grade, linked health and school performance data NSW, 2005–2018

From: The impact of childhood injury and injury severity on school performance and high school completion in Australia: a matched population-based retrospective cohort study

  Grade 31 Grade 52 Grade 73 Grade 94
Characteristics Injury case
(n = 50,213)
Comparison
(n = 50,213)
Injury case
(n = 46,034)
Comparison
(n = 46,034)
Injury case
(n = 36,962)
Comparison
(n = 36,962)
Injury case
(n = 24,501)
Comparison
(n = 24,501)
  n % n % n % n % n % n % n % n %
Gender
 Male 28,473 56.7 28,473 56.7 26,221 57.0 26,221 57.0 21,392 57.9 21,392 57.9 14,924 60.9 14,924 60.9
 Female 21,740 43.3 21,740 43.3 19,813 43.0 19,813 43.0 15,570 42.1 15,570 42.1 9577 39.1 9577 39.1
Location of residence
 Urban 36,295 72.3 36,295 72.3 32,986 71.7 32,986 71.7 26,736 72.3 26,736 72.3 17,966 73.3 17,966 73.3
 Rural 13,893 27.7 13,893 27.7 13,027 28.3 13,027 28.3 10,209 27.6 10,209 27.6 6517 26.6 6517 26.6
 Not known 25 0.1 25 0.1 21 0.1 21 0.1 17 0.1 17 0.1 18 0.1 18 0.1
Socioeconomic status
 Most disadvantaged 10,658 21.2 10,658 21.2 9581 20.8 9581 20.8 7507 20.3 7507 20.3 4737 19.3 4737 19.3
 2 11,450 22.8 11,450 22.8 10,568 23.0 10,568 23.0 8324 22.5 8324 22.5 5315 21.7 5315 21.7
 3 10,890 21.7 10,890 21.7 10,118 22.0 10,118 22.0 8151 22.1 8151 22.1 5400 22.0 5400 22.0
 4 5306 10.6 5306 10.6 4782 10.4 4782 10.4 3933 10.6 3933 10.6 2706 11.0 2706 11.0
 Least disadvantaged 11,882 23.7 11,882 23.7 10,962 23.8 10,962 23.8 9029 24.4 9029 24.4 6324 25.8 6324 25.8
 Not known 27 0.1 27 0.1 24 0.1 24 0.1 18 0.1 18 0.1 19 0.1 19 0.1
LBOTE5
 Non-LBOTE 39,072 77.8 38,669 77.0 36,710 79.8 36,365 79.0 29,850 80.8 29,629 80.2 19,815 80.9 19,695 80.4
 LBOTE 10,889 21.7 11,299 22.5 9213 20.0 9569 27.8 7067 19.1 7280 19.7 4662 19.0 4778 19.5
 Not known 252 0.5 245 0.5 111 0.2 100 0.2 45 0.1 53 0.1 24 0.1 28 0.1
Health condition
 0 49,875 99.3 49,577 98.7 45,707 99.3 45,382 95.6 36,367 99.3 36,393 98.5 24,320 99.3 24,042 98.1
 1 323 0.6 624 1.2 311 0.7 644 1.4 255 0.7 560 1.5 174 0.7 454 1.9
 ≥2 15 0.03 12 0.02 16 0.03 8 0.02 10 0.03 9 0.02 7 0.03 5 0.02
Parent highest level of education
 Year 11 or equivalent 3714 7.4 3226 6.4 4230 9.2 3685 8.0 3139 8.5 2817 7.6 2003 8.2 1868 7.6
 Year 12  or equivalent 2042 4.1 1950 3.9 2315 5.0 2241 4.9 1796 4.9 1743 4.7 1211 4.9 1221 5.0
 Certificate I-IV or trade 14,716 29.3 14,596 29.1 13,704 29.8 13,723 29.8 11,122 30.1 11,172 30.2 7319 29.9 7315 18.3
 Advanced diploma/ diploma 8317 16.6 8438 16.8 7846 17.0 17,795 38.7 6625 17.9 6576 17.8 9205 37.6 9301 38.0
 Bachelor degree or higher 18,880 37.6 19,717 39.3 17,260 34.5 17,795 38.7 13,856 37.5 14,250 38.6 9205 37.6 9301 38.0
 Not stated/not known 2544 5.1 2286 4.6 679 1.5 630 1.4 424 1.2 404 1.1 296 1.2 320 1.3
Health care use Mean SD Mean SD Mean SD Mean SD Mean SD Mean SD Mean SD Mean SD
ED visits 6.7 6.1 3.7 3.0 6.8 6.2 4.6 4.4 6.6 6.0 4.5 4.4 6.2 5.7 4.1 3.9
Hospital admissions 2.8 4.2 1.1 3.2 2.8 4.6 2.0 3.7 2.6 3.7 2.0 2.8 2.4 3.9 1.8 2.9
Hospital length of stay 6.3 19.3 3.4 9.7 6.1 20.6 3.3 10.5 5.4 16.0 2.9 10.6 4.5 14.7 2.2 7.3
  1. 1 Grade 3 chi-square tests: LBOTE p < 0.008; Health conditions p < 0.0001; Parent highest level of education p < 0.0001; and Wilcoxon Mann-Whitney tests: ED visits p < 0.0001; Hospital admissions p < 0.0001; and Hospital length of stay p < 0.0001. 2 Grade 5 chi-square tests: LBOTE p < 0.01; Health conditions p < 0.0001; Parent highest level of education p < 0.0001; and Wilcoxon Mann-Whitney tests: ED visits p < 0.0001; Hospital admissions p < 0.0001; and Hospital length of stay p < 0.0001. 3 Grade 7 chi-square tests: LBOTE p = 0.1; Health conditions p < 0.0001; Parent highest level of education p < 0.0002; and Wilcoxon Mann-Whitney tests: ED visits p < 0.0001; Hospital admissions p < 0.0001; and Hospital length of stay p < 0.0001. 4 Grade 9 chi-square tests: LBOTE p = 0.4; Health conditions p < 0.0001; Parent highest level of education p = 0.3; and Wilcoxon Mann-Whitney tests: ED visits p < 0.0001; Hospital admissions p < 0.0001; and Hospital length of stay p < 0.0001. 5Language background other than English