Variable | n | % | Mean | SD | Range |
---|---|---|---|---|---|
Age, years |  |  | 70.21 | 10.84 | 29–96 |
Gender | Â | Â | Â | Â | Â |
  Male | 37 | 26.4 |  |  |  |
  Female | 103 | 73.6 |  |  |  |
BMI, kg/m2 |  |  | 25.37 | 4.11 | 14.8–36.5 |
Education | Â | Â | Â | Â | Â |
  ≤ Elementary school | 46 | 32.8 |  |  |  |
  Junior/Senior High school | 70 | 50.0 |  |  |  |
  College or above | 24 | 17.2 |  |  |  |
Disease duration (years) |  |  | 5.94 | 5.54 | 0.1–30 |
Other chronic diseases | Â | Â | Â | Â | Â |
  No | 40 | 28.6 |  |  |  |
  Yes | 100 | 71.4 |  |  |  |
Taking analgesics | Â | Â | Â | Â | Â |
  No | 78 | 55.7 |  |  |  |
  Yes | 62 | 44.3 |  |  |  |
Physical therapy | Â | Â | Â | Â | Â |
  No | 84 | 60 |  |  |  |
  Yes | 56 | 40 |  |  |  |
Intra-articular injection | Â | Â | Â | Â | Â |
  No | 12 | 8.6 |  |  |  |
  Yes | 128 | 91.4 |  |  |  |
Knee joint surgery | Â | Â | Â | Â | Â |
  No | 90 | 64.3 |  |  |  |
  Yes | 50 | 35.7 |  |  |  |
Disease severity (K-L GS) |  |  | 2.52 | 0.81 | 1–4 |
  Level 1 | 9 | 6.4 |  |  |  |
  Level 2 | 68 | 48.6 |  |  |  |
  Level 3 | 44 | 31.4 |  |  |  |
  Level 4 | 19 | 13.6 |  |  |  |