Table 1 Characteristics of participants (including mean differences) with shoulder impingement syndrome (SIS, n = 39) and age, gender and dominant arm matched asymptomatic control participants (n = 39)
Characteristic | All (n = 78) | SIS (n = 39) | Asymptomatic (n = 39) | Mean difference SIS-Asymp (95% CI) | P value |
|---|---|---|---|---|---|
Age (yr), mean (SD) | 56.4 (10.8) | 57.1 (11.1) | 55.7 (10.6) | 1.3 (−3.6, 6.2) | 0.59 |
Gender (female), number (%) | 39 (50) | 19 (49) | 20 (51) | – |  |
Weight (kg), mean (SD) | 78.4 (16.8) | 84.8 (17.6) | 71.9 (13.3) | 12.9 (6.1, 19.7) | < 0.001 |
Height (cm), mean (SD) | 168.4 (8.8) | 170.0 (8.0) | 166.8 (9.3) | 3.3 (−0.7,7.2) | 0.10 |
BMI (kg/m2), mean (SD) | 27.5 (4.8) | 29.3 (5.3) | 25.7 (3.5) | 3.6 (1.6, 5.6) | < 0.001 |
Disability of the Arm, Hand and Shoulder (DASH) questionnaire (/100), mean (SD) | – | 26.7 (12.5) | – | – |  |