Demographic data and baseline functional scores for both study sites.
| Characteristics | TWH | HHS | ||||
|---|---|---|---|---|---|---|
| Included, n = 457 | Excluded, n = 25 | p | Included, n = 2720 | Excluded, n = 544 | p | |
| Age, yrs (SD) | 67.5 (9.6) | 67.4 (9.3) | 0.64 | 69 (9.1) | 70 (9.3) | 0.12 |
| Women, n (%) | 287 (62) | 18 (72) | 0.29 | 1719 (63) | 323 (59) | 0.10 |
| BMI, kg/m2 (SD) | 30 (6.6) | 28.6 (7.3) | 0.28 | 32 (6.1) | 31.5 (6.1) | 0.06 |
| Comorbidity, mean (SD) | 2.8 (1.6) | 2.7 (1.5) | 0.53 | 1.5 (1.2) | 1.6 (1.2) | 0.17 |
| Mean baseline OKS (SD) | — | — | — | 40.1 (7.6) | 40.4 (7.1) | 0.35 |
| Mean baseline WOMAC, total score (SD) | 51.6 (17.3) | 48.1 (16.8) | 0.43 | — | — | — |
| Mean baseline WOMAC pain (SD) | 10.5 (3.6) | 9.5 (3.5) | 0.88 | — | — | — |
TWH: Toronto Western Hospital; HHS: Hamilton Health Sciences Henderson Hospital; BMI: body mass index; OKS: Oxford Knee Score; WOMAC: Western Ontario McMaster University Osteoarthritis Index.