Skip to main content

Advertisement

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
  1. *WOMAC score ranges from 0 to 20, with 20 indicating worst pain. KOOS score ranges from 0 (extreme symptoms) to 100 (no symptoms).