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Table 3 Factors related to willingness to participate: multivariate analysis

From: Attitudes and barriers towards participation in an acupuncture trial among breast cancer patients: a survey study

  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         
  ≤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         
  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         
  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         
  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         
  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         
  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    1.17 (1.08-1.26) <0.001
Travel difficulty         
  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         
  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         
  Disagree 1     1    
  Agree 0.40 (0.24-0.64) <0.001    0.96 (0.50-1.83) 0.90   
Demanding job         
  Disagree 1     1    
  Agree 0.73 (0.45-1.18) 0.196    1.10 (0.58-2.09) 0.77   
Home responsibilities         
  Disagree 1     1    
  Agree 0.39 (0.24-0.62) <0.001    0.77 (0.41-1.42) 0.40   
Not interested in acupuncture         
  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
  1. *Model 1: Multivariate analysis on sociodemographic and clinical factors related to willingness to participate.
  2. +Model 2: Multivariate analysis on barriers related to willingness to participate.
  3. ++Model 3: Multivariate analysis on factors significant in Model 2 and 3 related to willingness to participate.