| Model 1* | Model 2+ | Model 3++ | |||||
---|---|---|---|---|---|---|---|---|
 | Bivariate analysis | Multivariate analysis | Multivariate analysis | Multivariate analysis | ||||
 |  | Pseudo R2 = 0.20 | Pseudo R2 = 0.25 | Pseudo R2 = 0.36 | ||||
 | O.R. (95% C.I.) | p-value | A.O.R. (95% C.I.) | p-value | A.O.R. (95% C.I.) | p-value | A.O.R. (95% C.I.) | p-value |
Age | Â | Â | Â | Â | Â | Â | Â | Â |
  ≤55 | 1 |  | 1 |  |  |  |  |  |
  56-65 | 0.67 (0.37-1.21) | 0.18 | 0.77 (0.38-1.58) | 0.48 |  |  |  |  |
  >65 | 0.44 (0.24-0.83) | 0.011 | 0.85 (0.40-1.83) | 0.68 |  |  |  |  |
Education | Â | Â | Â | Â | Â | Â | Â | Â |
  High school or less | 1 |  | 1 |  |  |  | 1 |  |
  College | 4.18 (2.26-7.73) | <0.001 | 4.07 (1.97-8.42) | <0.001 |  |  | 4.24 (1.77-10.17) | 0.001 |
  Graduate | 1.93 (1.12-3.31) | 0.018 | 1.86 (0.97-3.56) | 0.062 |  |  | 1.27 (0.62-2.61) | 0.51 |
Radiation therapy | Â | Â | Â | Â | Â | Â | Â | Â |
  No | 1 |  | 1 |  |  |  | 1 |  |
  Yes | 1.79 (1.10-2.89) | 0.017 | 2.09 (1.16-3.76) | 0.014 |  |  | 2.72 (1.39-5.32) | 0.004 |
CAM use | Â | Â | Â | Â | Â | Â | Â | Â |
  No | 1 |  | 1 |  |  |  |  |  |
  Yes | 2.36 (1.46-3.82) | <0.001 | 1.26 (0.71-2.24) | 0.43 |  |  |  |  |
Joint pain during past 7 days | Â | Â | Â | Â | Â | Â | Â | Â |
  None | 1 |  | 1 |  |  |  | 1 |  |
  Mild/moderate | 1.98 (1.06-3.71) | 0.032 | 2.06 (0.96-4.44) | 0.064 |  |  | 1.48 (0.61-3.57) | 0.38 |
  Severe or more | 2.60 (1.19-5.67) | 0.017 | 3.49 (1.34-9.04) | 0.01 |  |  | 2.77 (0.89-8.59) | 0.078 |
Co-morbidity | Â | Â | Â | Â | Â | Â | Â | Â |
  No | 1 |  | 1 |  |  |  |  |  |
  Yes | 0.58 (0.35-0.97) | 0.038 | 0.65 (0.34-1.23) | 0.19 |  |  |  |  |
Acupuncture expectancy scale | 1.19 (1.12-1.26) | <0.001 | 1.20 (1.12-1.28) | <0.001 | Â | Â | 1.17 (1.08-1.26) | <0.001 |
Travel difficulty | Â | Â | Â | Â | Â | Â | Â | Â |
  Disagree | 1 |  |  |  | 1 |  | 1 |  |
  Agree | 0.27 (0.16-0.44) | <0.001 |  |  | 0.41 (0.23-0.75) | 0.003 | 0.36 (0.19-0.68) | 0.002 |
Concern with experimentation | Â | Â | Â | Â | Â | Â | Â | Â |
  Disagree | 1 |  |  |  | 1 |  | 1 |  |
  Agree | 0.13 (0.069-0.26) | <0.001 |  |  | 0.34 (0.14-0.81) | 0.015 | 0.31 (0.13-0.78) | 0.013 |
Don't want placebo | Â | Â | Â | Â | Â | Â | Â | Â |
  Disagree | 1 |  |  |  | 1 |  |  |  |
  Agree | 0.40 (0.24-0.64) | <0.001 |  |  | 0.96 (0.50-1.83) | 0.90 |  |  |
Demanding job | Â | Â | Â | Â | Â | Â | Â | Â |
  Disagree | 1 |  |  |  | 1 |  |  |  |
  Agree | 0.73 (0.45-1.18) | 0.196 |  |  | 1.10 (0.58-2.09) | 0.77 |  |  |
Home responsibilities | Â | Â | Â | Â | Â | Â | Â | Â |
  Disagree | 1 |  |  |  | 1 |  |  |  |
  Agree | 0.39 (0.24-0.62) | <0.001 |  |  | 0.77 (0.41-1.42) | 0.40 |  |  |
Not interested in acupuncture | Â | Â | Â | Â | Â | Â | Â | Â |
  Disagree | 1 |  |  |  | 1 |  |  |  |
  Agree | 0.051(0.022-0.12) | <0.001 |  |  | 0.098 (0.040-0.24) | <0.001 | 0.12 (0.043-0.35) | <0.001 |