Research Article
The Association of Obesity with Walking Independent of Knee Pain: The Multicenter Osteoarthritis Study
Table 1
Summary of baseline characteristics across all subjects and within BMI categories.
| | All subjects () | BMI <25 () | BMI ≥25 and <30 () | BMI ≥30 and <35 () | BMI ≥35 () |
| | Knee pain (0–100) [Mean (sd)] | 18.8 (20.9) | 15.6 (18.3) | 16.6 (19.5) | 19.6 (20.8) | 24.2 (23.8) | | BMI [kg/m] [Mean (sd)] | 30.7 (6.0) | | | | | | BMI <25 [%] | 15 | | | | | | BMI ≥25 and <30 [%] | 36 | | | | | | BMI ≥30 and <35 [%] | 29 | | | | | | BMI ≥35 [%] | 20 | | | | | | Age [Mean (sd)] | 67.2 (7.7) | 67.9 (7.8) | 68.4 (8.0) | 67.0 (7.6) | 64.5 (6.7) | | Sex [% women] | 60 | 68 | 57 | 57 | 63 | | Living situation [% Lives alone] | 17 | 16 | 16 | 17 | 18 | | Education [% ≥ College] | 47 | 55 | 47 | 45 | 44 | | Race [% White] | 90 | 96 | 92 | 89 | 85 | | Site [% Alabama] | 38 | 37 | 38 | 37 | 39 | | Radiographic Knee Osteoarthritis [%] | 54 | 41 | 52 | 55 | 71 | | Pain in the hip, ankle, or foot [%] | 52 | 43 | 47 | 53 | 66 | | No Comorbidity [%] | 59 | 66 | 61 | 59 | 51 | | Depressive Symptoms [Mean CES-D (sd)] | 6.4 (6.8) | 5.3 (5.8) | 5.8 (6.1) | 6.8 (7.3) | 7.7 (7.6) | | Knee extensor strength [N-M/kg] [Mean (sd)] | 1.03 (0.41) | 1.17 (0.41) | 1.11 (0.43) | 1.00 (0.37) | 0.82 (0.33) |
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