WOMAC Index | Month | Adjusted means | Adjusted difference | 95% CI | P value | |
---|---|---|---|---|---|---|
 |  | Acupuncture | Control |  |  |  |
Pain | 3 | 3.77 | 6.39 | -2.62 | -0.77 to -4.47 | 0.007 |
 | 12 | 4.38 | 5.76 | -1.38 | 0.8 to -3.56 | 0.200 |
Stiffness | 3 | 2.49 | 2.98 | -0.49 | 0.56 to -1.54 | 0.346 |
 | 12 | 2.69 | 2.75 | -0.58 | 1.3 to -1.4 | 0.930 |
Function | 3 | 15.55 | 19.49 | -3.94 | 3.4 to -11.3 | 0.281 |
 | 12 | 16.81 | 18.18 | -1.36 | 8.7 to -11.4 | 0.778 |
Global | 3 | 22.27 | 28.43 | -6.17 | 3.1 to -15.4 | 0.184 |
 | 12 | 23.83 | 26.78 | -2.94 | 9.5 to -15.4 | 0.624 |