Characteristic | |
---|---|
Age, yrs (SD) | 62.7 (8.0) |
Women, n (%) | 1135 (63) |
Some college, n (%) | 1279 (71) |
ROA, n (%) | 1045 (58.5) |
Patellofemoral ROA, n (%) | 80 (4.5) |
Tibiofemoral ROA, n (%) | 604 (33.8) |
Patellofemoral and tibiofemoral ROA, n (%) | 361 (20.2) |
Comorbidities, n (%) none | 991 (55) |
BMI, kg/m2 (SD) | 30.9 (6.0) |
Knee pain, VAS 0–10 (SD) | 3.0 (2.2) |
Walking speed, m/s (SD)* | 1.18 (0.2) |
Knee strength, Newton meters (SD)** | 68 (36) |
Depressive symptoms, CES-D 0–60 (SD) | 8 (7.7) |
Physical activity, PASE 0–360 (SD) | 171 (87) |
Arthritis medications or steroid injection, n (%)*** | 698 (39) |
Baseline WOMAC physical function score, 4–68 (SD) | 18.7 (11.2) |
↵* Walking speed measured in meters per second over a 20-meter walk at a usual pace.
↵** Isokinetic knee extensor strength. Weaker value of 2 knees used for analysis.
↵*** Arthritis medication taken every day or almost every day including aspirin, ibuprofen, acetaminophen, COX-2 inhibitors, or other nonsteroidal or antiinflammatory medications, or a steroid injection, such as cortisone, in either knee in the past 12 months. ROA: radiographic knee osteoarthritis; BMI: body mass index; VAS: visual analog scale; CES-D: Center for Epidemiologic Studies Depression Scale; PASE: Physical Activity Scale for the Elderly; WOMAC: Western Ontario McMaster Universities Osteoarthritis Index.