Demographic characteristics of study participants
| Placebo (n=27) | Active (n=27) | ||
| Sex | N (%) | N (%) | P value (Χ2) |
| Male | 12 (44.4) | 7 (25.9) | |
| Female | 15 (56.6) | 20 (74.1) | 0.15 |
| Mean (SD, range) | Mean (SD, range) | P value (t-test) | |
| Mean age (years) | 55.7 (8.3, 40–69) | 51.9 (8.6, 32–72) | 0.11 |
| Mean duration of symptoms (months) | 10.6 (8.1, 2–36) | 8.7 (7.2, 2–30) | 0.36 |
| Comorbidities/prior procedures | |||
| Prior diagnosis of diabetes | 7 | 6 | |
| Previous shoulder procedure | 2 | 2 | |
| Previous stroke | 0 | 1 |