Change in WOMAC and VAS scores from baseline to 3-month and 1-month followup in control and treatment groups. Variable patient numbers for each category reflect variable numbers of patients for which data were available at each timepoint. Values for the control and treatment groups are unadjusted. p values are adjusted for baseline scores.
| Control, mean (SD) | Treatment, mean (SD) | p | |
|---|---|---|---|
| WOMAC pain score, mean (SD) | |||
| 4 wks | −0.1 (1.9) n = 33 | −2.1 (2.6) n = 34 | 0.001 |
| 12 wks | −0.2 (2.2) n = 29 | −1.0 (2.8) n = 30 | 0.35 |
| WOMAC composite score, mean (SD) | |||
| 4 wks | 1.0 (7.8) n = 30 | −8.7 (11.7) n = 31 | 0.001 |
| 12 wks | 0.6 (9.9) n = 29 | −3.2 (10.2) n = 25 | 0.21 |
| VAS, physician global assessment, mean (SD) | |||
| 4 wks | 0.1 (2.0) n = 28 | −1.1 (2.4) n = 30 | 0.03 |
| 12 wks | −0.2 (1.5) n = 28 | −0.03 (2.0) n = 26 | 0.54 |
WOMAC: Western Ontario and McMaster universities index; VAS: visual analog scale.