Table 2 Clinical characteristics of participants with radiographic-confirmed knee OA by BMI level (N = 2,675)
From: CAM use among overweight and obese persons with radiographic knee osteoarthritis
BMI ≥ 35 kg/m2 | BMI between 30 and <35 kg/m2 | BMI between 25 and <30 kg/m2 | BMI < 25 kg/m2 | |
|---|---|---|---|---|
(n = 364) | (n = 804) | (n = 1,042) | (n = 465) | |
Symptoms | Mean (standard deviation) | |||
WOMAC*–Pain | 6.1 (4.7) | 4.4 (4.0) | 3.7 (3.6) | 2.8 (3.3) |
KOOS*–QOL | 53.5 (25.1) | 60.3 (22.5) | 64.2 (22.5) | 69.5 (21.0) |
Function and performance | ||||
Isometric strength/chair stands (seconds) | 13.1 (4.4) | 12.1 (4.0) | 11.6 (3.8) | 10.6 (3.0) |
20-meter walk (seconds) | 17.5 (4.0) | 16.3 (3.1) | 15.5 (2.8) | 15.1 (2.6) |
Joint space narrowing: x-ray evidence of knee severity | Percentage | |||
OARSI grade 0 (normal) | 26.9 | 27.5 | 31.0 | 35.1 |
OARSI grade 1–2 (narrowed) | 52.2 | 51.5 | 46.6 | 48.2 |
OARSI grade 3 (severe) | 20.9 | 21.0 | 22.4 | 16.8 |
Multi-joint osteoarthritis | ||||
Bilateral knee OA | 68.4 | 66.0 | 60.9 | 53.3 |
Any back pain (30 days) | 66.5 | 56.7 | 56.3 | 59.6 |
Hand osteoarthritis | 15.8 | 17.6 | 18.1 | 22.5 |
Hip symptoms (12 months) | 30.9 | 24.4 | 23.9 | 21.2 |
Total hip replacement | 0.8 | 2.5 | 1.8 | 1.9 |
History | ||||
History of knee injury | 52.8 | 46.8 | 47.2 | 46.0 |
History of knee surgery | 27.6 | 29.0 | 31.9 | 26.9 |