| Variable | Placebo N = 20 | HA N = 22 |
|---|---|---|
| Gender (males) a (females) a |
5 (25.0%) 15 (75.0%) |
5 (22.7 %) 17 (77.3 %) |
| Ethnic (Caucasian) a |
20 (100.0%) | 22 (100.0%) |
| Age (years) b | 68.3 (9.1) | 67.5 (8.1) |
| Body Mass Index (BMI) (Kg/m2) b | 34.2 (6.7) | 32.7 (4.1) |
| Years since diagnosis c | 11 (11.0) | 10.0 (7.0) |
| Pain WOMAC subscale d | 67.6 (60.4-74.8) | 62.6 (58.9-66.4) |
| Stiffness WOMAC subscale d | 67.4 (57.4-77.3) | 64.2 (53.3-75.0) |
| Physical function WOMAC subscale d | 71.2 (63.5-78.9) | 63.2 (55.6-70.7) |
| Total WOMAC index score d | 70.1 (63.2-77.1) | 63.1 (56.4-69.9) |