Characteristics of the patients and their knee pain history (x̅ (SD))
| Glucosamine group | Placebo group | |
|---|---|---|
| No of patients | 24 | 22 |
| Male | 17 | 16 |
| Female | 7 | 6 |
| Age (y) | 41.6 (12.5) | 43.8 (10.4) |
| Male | 40.0 (13.4) | 45.0 (7.7) |
| Female | 45.6 (9.6) | 40.5 (16.4) |
| Age classes: | ||
| <35 y | 9 | 5 |
| 36–50 y | 8 | 10 |
| 51–70 y | 7 | 7 |
| Localisation of pain | ||
| Left | 11 | 13 |
| Right | 7 | 7 |
| Bilateral | 6 | 2 |
| Duration of symptoms | ||
| Less than 1 year | 3 | 0 |
| 1–5 y | 5 | 3 |
| 6–10 y | 9 | 4 |
| >10 y | 7 | 15 |
| x̅ = 10.3 y (±9.4) | x̅ = 15.9 y (±8.6) | |