Table 1.
Demographic and clinical characteristic information on the study subjects
| Patients (N = 394) | Controls (N = 998) | Statistics | P value | |
|---|---|---|---|---|
| Age, mean±sd | 53.7 ± 6.6 | 54.1 ± 6.5 | T = −1.02 | 0.31 |
| Gender (%) | ||||
| Male | 181 (46) | 456 (46) | ||
| Female | 213 (54) | 542 (54) | χ2 = 0.0006 | 0.98 |
| Other tendinopathies (%) | ||||
| Yes | 21 (5) | 52 (5) | ||
| No | 373 (95) | 946 (95) | χ2 = 6.66 × 10−31 | 1.00 |
| Smoke (%) | ||||
| Yes | 77 (20) | 193 (19) | ||
| No | 317 (80) | 805 (81) | χ2 = 0.0001 | 0.99 |
| Drink alcohol (%) | ||||
| Yes | 87 (22) | 224 (22) | ||
| No | 307 (78) | 774 (78) | χ2 = 0.0057 | 0.94 |
| Work with repeated and sustained arm abduction (%) | ||||
| Yes | 161 (41) | 401 (40) | ||
| No | 233 (59) | 597 (60) | χ2 = 0.0300 | 0.86 |
| Perform sports with shoulder involvement (%) | ||||
| Yes | 40 (10) | 107 (11) | ||
| No | 354 (90) | 891 (89) | χ2 = 0.0460 | 0.83 |