Table 7 Prevalence of US alterations, stratified by age
From: Shoulder disorders in female working-age population: a cross sectional study
Age | Dominant arm | Non-dominant arm | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|
Abnormal | Normal | Abnormal | Normal | |||||||
Yrs | No. | % | No. | % | No. | % | No. | % | No. | % |
20-24 | 22 | 7.3 | 0 | 0 | 22 | 100 | 0 | 0 | 22 | 100 |
25-29 | 36 | 11.9 | 2 | 5.6 | 34 | 94.4 | 0 | 0 | 36 | 100 |
30-34 | 46 | 15.2 | 1 | 2.2 | 45 | 97.8 | 1 | 2.2 | 45 | 97.8 |
35-39 | 61 | 20.2 | 3 | 4.9 | 58 | 95.1 | 1 | 1.6 | 60 | 98.4 |
40-44 | 43 | 14.3 | 1 | 2.3 | 42 | 97.7 | 0 | 0 | 43 | 100 |
45-49 | 42 | 13.9 | 7 | 16.7 | 35 | 83.3 | 6 | 14.3 | 36 | 85.7 |
50-55 | 52 | 17.2 | 8 | 15.4 | 44 | 84.6 | 10 | 19.2 | 42 | 80.8 |
| Â | Â | Â | X 2 = 16.263; p = 0.012* | X 2 = 31.142; p = 0.001* | ||||||