1-year Change in Walking Speeda | |||
---|---|---|---|
No Change | Decline | Increase | |
n | 2531 | 777 | 956 |
Age, yrs | 61.4 (9.2) | 61.4 (9.1) | 60.3 (8.9) |
Female, n (%) | 1470 (58) | 476 (61) | 515 (54) |
Race, White, n (%) | 2098 (83) | 609 (78) | 746 (78) |
BMI, kg/m2 | 28.5 (4.7) | 28.6 (4.9) | 28.4 (4.8) |
WOMAC Pain (0–20) | 3.1 (3.4) | 3.6 (3.8) | 3.5 (3.9) |
Baseline walking speedb, m/s | 1.33 (0.20) | 1.43 (0.22) | 1.24 (0.21) |
Symptomatic knee OAc, n (%) | 757 (30) | 256 (33) | 272 (28) |
Values are mean (SD) unless otherwise specified.
↵aWalking speed defined as decline: ≤ -0.1 m/s change; no change: between -0.1 and 0.1 m/s change; or increase: ≥ 0.1 m/s change during a participant’s first observation period.
↵bBaseline walking speed defined as walking speed at the initial visit of a participant’s first observation period.
↵cSymptomatic knee OA defined by presence of radiographic evidence of knee OA = centrally read Kellgren-Lawrence grade ≥ 2 on semiflexed radiographs, AND presence of self-reported frequent pain = evaluated by pain, aching, or stiffness in or around each knee on most days for 1 month within the last year. OA: osteoarthritis; WOMAC: Western Ontario and McMaster Universities Osteoarthritis Index (higher score indicates greater pain).