Patients’ baseline characteristics*
| All patients with 2 year follow up (n = 505) | Patients lost to follow up or with missing data (n = 236) | p Value | |
|---|---|---|---|
| *Except where otherwise indicated, values are the mean (SD). | |||
| VAS, visual analogue scale; NSAIDs, non-steroidal anti-inflammatory drugs; WOMAC, Western Ontario and McMaster Universities Osteoarthritis Index. | |||
| Age (years) | 64.0 (10.1) | 63.7 (10.3) | 0.73 |
| Sex, No (%) female | 309 (61.2) | 151 (64.0) | 0.47 |
| Body mass index (kg/m2) | 26.3 (4.6) | 26.3 (4.6) | 0.89 |
| Duration of symptoms (years) | 4.7 (5.2) | 4.3 (5.0) | 0.34 |
| Pain (0–100 mm VAS) | 55.0 (15.8) | 56.8 (16.3) | 0.16 |
| WOMAC function score (0–100) | 44.4 (16.2) | 45.9 (16.9) | 0.31 |
| Patient global assessment (0–100 mm VAS) | 57.8 (18.4) | 59.3 (18.7) | 0.30 |
| Radiological grade (Kellgren-Lawrence), No (%) | 0.27 | ||
| III | 273 (54.1) | 119 (50.4) | |
| IV | 142 (28.1) | 63 (26.7) | |
| Previous treatment, No (%) | |||
| NSAIDs | 331 (65.5) | 164 (69.5) | 0.26 |
| Intra-articular injections | 20 (4.0) | 3 (1.3) | 0.05 |