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Table 2 Number (row percentage) of radiology claimants receiving specific radiology type claims within each descriptive category

From: Medical and allied health service use during acute and chronic post-injury periods in whiplash injured individuals

 nPlain radiograph (x-ray)MRICTUltrasound
Total21,97519,183 (87.3%)2236 (10.2%)5511 (25.1%)1427 (6.5%)
Sex
 Male78816888 (87.4%)819 (10.4%)2158 (27.4%)478 (6.1%)
 Female14,08812,291 (87.2%)1416 (10.0%)3350 (23.8%)948 (6.7%)
z statistic (Mann-Whitney U), p, ra z = − 3.1, p < .002, r = 0.02z = − 1.5, p < .134, r = 0.03z = −6.7, p < .001, r = 0.09z = − 1.3, p < .182, r = 0.03
Age
 18–2454114989 (92.2%)243 (4.5%)1020 (18.9%)159 (2.9%)
 25–3448244207 (87.2%)455 (9.4%)1132 (23.5%)288 (6.0%)
 35–4442063542 (84.2%)571 (13.6%)1153 (27.4%)308 (7.3%)
 45–5435763046 (85.2%)550 (15.4%)1015 (28.4%)306 (8.6%)
 55–6422331891 (84.7%)282 (12.6%)662 (29.6%)216 (9.7%)
  > 6517251508 (87.4%)135 (7.8%)529 (30.7%)150 (8.7%)
Chi-squared (χ2) (Kruskal-Wallis H), p, ε2a χ2 = 112.5, p < .001, ε2 = 0.01χ2 = 363.0, p < .001, ε2 = 0.16χ2 = 200.8, p < .001, ε2 = 0.04χ2 = 199.7, p < .001, ε2 = 0.14
Area of residence
 Major cities16,14713,938 (86.3%)1844 (11.4%)3925 (24.3%)1138 (7.0%)
 Inner regional48504381 (90.3%)313 (6.5%)1304 (26.9%)232 (4.8%)
 Outer regional804717 (89.2%)52 (6.5%)233 (29.0%)45 (5.6%)
 Remote1411 (78.6%)3 (21.4%)3 (21.4%)
 Very remote11 (100%)
Chi-squared (χ2) (Kruskal-Wallis H), p, ε2a χ2 = 268.9, p < .001, ε2 = 0.01χ2 = 61.7, p < .001, ε2 = 0.03χ2 = 87.1, p < .001, ε2 = 0.02χ2 = 13.8, p < .007, ε2 = 0.01
Common law lodged
 Yes872569 (65.3%)447 (51.3%)400 (45.9%)196 (24.5%)
 No21,10318,614 (88.2%)1789 (8.5%)5111 (24.2%)1231 (5.8%)
z statistic (Mann-Whitney U), p, ra z = −6.7, p < .001, r = 0.04z = −41.7, p < .001, r = 0.88z = −14.8, p < .001, r = 0.20z = −20.3, p < .001, r = 0.53
  1. a r is the effect size and ε2 (epsilon squared) is the estimate of effect size