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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

 

n

Plain radiograph (x-ray)

MRI

CT

Ultrasound

Total

21,975

19,183 (87.3%)

2236 (10.2%)

5511 (25.1%)

1427 (6.5%)

Sex

 Male

7881

6888 (87.4%)

819 (10.4%)

2158 (27.4%)

478 (6.1%)

 Female

14,088

12,291 (87.2%)

1416 (10.0%)

3350 (23.8%)

948 (6.7%)

z statistic (Mann-Whitney U), p, ra

 

z = − 3.1, p < .002, r = 0.02

z = − 1.5, p < .134, r = 0.03

z = −6.7, p < .001, r = 0.09

z = − 1.3, p < .182, r = 0.03

Age

 18–24

5411

4989 (92.2%)

243 (4.5%)

1020 (18.9%)

159 (2.9%)

 25–34

4824

4207 (87.2%)

455 (9.4%)

1132 (23.5%)

288 (6.0%)

 35–44

4206

3542 (84.2%)

571 (13.6%)

1153 (27.4%)

308 (7.3%)

 45–54

3576

3046 (85.2%)

550 (15.4%)

1015 (28.4%)

306 (8.6%)

 55–64

2233

1891 (84.7%)

282 (12.6%)

662 (29.6%)

216 (9.7%)

  > 65

1725

1508 (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 = 0.01

χ2 = 363.0, p < .001, ε2 = 0.16

χ2 = 200.8, p < .001, ε2 = 0.04

χ2 = 199.7, p < .001, ε2 = 0.14

Area of residence

 Major cities

16,147

13,938 (86.3%)

1844 (11.4%)

3925 (24.3%)

1138 (7.0%)

 Inner regional

4850

4381 (90.3%)

313 (6.5%)

1304 (26.9%)

232 (4.8%)

 Outer regional

804

717 (89.2%)

52 (6.5%)

233 (29.0%)

45 (5.6%)

 Remote

14

11 (78.6%)

3 (21.4%)

3 (21.4%)

–

 Very remote

1

1 (100%)

–

–

–

Chi-squared (χ2) (Kruskal-Wallis H), p, ε2a

 

χ2 = 268.9, p < .001, ε2 = 0.01

χ2 = 61.7, p < .001, ε2 = 0.03

χ2 = 87.1, p < .001, ε2 = 0.02

χ2 = 13.8, p < .007, ε2 = 0.01

Common law lodged

 Yes

872

569 (65.3%)

447 (51.3%)

400 (45.9%)

196 (24.5%)

 No

21,103

18,614 (88.2%)

1789 (8.5%)

5111 (24.2%)

1231 (5.8%)

z statistic (Mann-Whitney U), p, ra

 

z = −6.7, p < .001, r = 0.04

z = −41.7, p < .001, r = 0.88

z = −14.8, p < .001, r = 0.20

z = −20.3, p < .001, r = 0.53

  1. a r is the effect size and ε2 (epsilon squared) is the estimate of effect size