Baseline Participant Characteristics by Treatment Group
| Characteristic | Dextrose | Saline | Exercise | P Value |
|---|---|---|---|---|
| No. | 30 | 29 | 31 | |
| Female, No. (%) | 19 (63) | 20 (69) | 21 (68) | 0.82 |
| Age, mean (SD), y | 56.8 (7.9) | 56.8 (6.7) | 56.4 (7.0) | 0.97 |
| Duration of knee pain, No. (SD), mo | 79.8 (62.9) | 108.0 (99.5) | 60.4 (71.6) | 0.08 |
| Body mass index, No. (%) | ||||
| ≤25 | 10 (33) | 8 (28) | 6 (19) | |
| 25–30 | 6 (20) | 11 (38) | 12 (39) | 0.44 |
| ≥30 | 14 (47) | 10 (34) | 13 (42) | |
| Prior knee intervention, No. (%) | ||||
| History of arthroscopic surgery | 7 (23) | 5 (17) | 7 (23) | 0.84 |
| Physical therapy | 6 (20) | 3 (27) | 16 (52) | 0.08 |
| Hyaluronic acid injection | 3 (10) | 0 (0) | 2 (6) | 0.62 |
| Corticosteroid injection | 4 (13) | 1 (9) | 2 (6) | 0.79 |
| Glucosamine | 7 (23) | 5 (17) | 8 (26) | 0.82 |