Table 1 Characteristics of the study population (n = 294)
Characteristic | Value | Missing (%) |
|---|---|---|
Demographics | Â | Â |
 Age (years), mean ± SD | 61.1 ± 7.4 |  |
 Female, n (%) | 188 (63.9) |  |
 Marital status, n (%) |  | 15 (5.1) |
  Single/living alone | 54 (19.4) | |
  Married/living together | 225 (80.6) | |
 Education level, n (%) |  | 10 (3.4) |
  Primary school | 12 (4.2) | |
  Secondary school | 173 (60.9) | |
  Higher professional education/university | 99 (34.9) | |
Clinical factors | Â | Â |
 Duration of symptoms, n (%) |  | 18 (6.1) |
  0–1 year | 31 (11.2) | |
  1–5 years | 90 (32.6) | |
  > 5 years | 155 (56.2) | |
 KL-grade < 2, n (%) | 80 (27.9) | 7 (2.4) |
 KL-grade ≥ 2 , n (%) | 207 (72.1) | |
  right knee | 28 (9.8) | |
  left knee | 35 (12.2) | |
  both knees | 144 (50.2) | |
 Comorbidity, CIRS total score (range: 0–52), median (IQR) | 2 (1–4) | 2 (0.7) |
Independent variables | Â | Â |
 BMI, kg/m2, mean ± SD | 29.2 ± 5.5 |  |
 HADS depression score (range: 0–21), median (IQR) | 3 (1–6) |  |
Dependent variables | Â | Â |
 NRS knee pain last week(range: 0-10), mean ± SD | 5.0 ± 2.2 | 4 (1.4) |
 WOMAC physical function score (range: 0–68), mean ± SD | 25.1 ± 13.1 | 4 (1.4) |
 Get up and go test (sec.), mean ± SD | 11.2 ± 5.0 | 1 (0.3) |