Demographic features of the intervention groups
| Variable | Physiotherapy (n = 73) | Placebo (n = 67) | ||
|---|---|---|---|---|
| Values are mean (SD) unless otherwise indicated. | ||||
| *Kellgren and Lawrence grading on antero-posterior x rays20; x rays not available in six participants. Note: higher grades indicate more severe disease; grade 0 represents isolated patellofemoral joint disease. | ||||
| BMI, body mass index; grd, grade; m, months; y, years. | ||||
| Age (y) | 67.4 (8.6) | 69.8 (7.5) | ||
| Height (m) | 1.63 (0.08) | 1.65 (0.10) | ||
| Weight (kg) | 78.0 (12.1) | 78.9 (12.7) | ||
| BMI (kg/m2) | 29.3 (4.3) | 28.9 (3.9) | ||
| Symptom duration (y) | 9.6 (10.0) | 8.7 (7.9) | ||
| Sex | 23 (30%) male | 23 (34%) male | ||
| 50 (68%) female | 44 (66%) female | |||
| Severity on x ray* | Grd 0: 3 (4%) | Grd 0: 2 (3%) | ||
| Grd 1: 7 (10%) | Grd 1: 8 (12%) | |||
| Grd 2: 10 (14%) | Grd 2: 8 (12%) | |||
| Grd 3: 41 (56%) | Grd 3: 40 (60%) | |||
| Grd 4: 8 (11%) | Grd 4: 7 (10%) | |||
| Nature of symptoms | 29 (40%) unilateral | 17 (25%) unilateral | ||
| 44 (61%) bilateral | 50 (75%) bilateral | |||
| Treated leg | 49 (68%) dominant | 34 (51%) dominant | ||
| 24 (33%) non-dominant | 33 (49%) non-dominant | |||