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Table 7 Estimates of coefficients of patient choice of participation or opt-out (Stage-two from three-point outcome)

From: An empirical comparison of methods for analyzing correlated data from a discrete choice survey to elicit patient preference for colorectal cancer screening

    Three-point of outcome   
    Nominal    Bivariate
  MNL Simple SE MNL Robust SE MNL Random-effects MNP Simple SE MNP Robust SE Bivariate probit Simple SE Bivariate probit Robust SE
Process (ref = Enema/X-ray)        
   Stool 0.09 (-0.03, 0.21) 0.09 (-0.01, 0.19) 0.07 (-0.07, 0.20) 0.08 (-0.01, 0.18) 0.08 (0.01, 0.16) 0.00 (-0.07, 0.07) 0.00 (-0.06, 0.06)
   Scope -0.14 (-0.27, -0.01) -0.14 (-0.25, -0.03) -0.23 (-0.37, -0.09) -0.10 (-0.20, 0.00) -0.10 (-0.01, -0.19) -0.02 (-0.08, 0.05) -0.02 (-0.08, 0.04)
   CT 0.04 (-0.09, 0.17) 0.04 (-0.08, 0.15) 0.13 (-0.01, 0.27) 0.02 (-0.08, 0.12) 0.02 (-0.07, 0.11) 0.05 (-0.02, 0.12) 0.05 (-0.02, 0.12)
No Pain (ref = mild pain) 0.03 (-0.04, 0.11) 0.03 (-0.02, 0.09) 0.03 (-0.05, 0.11) 0.03 (-0.03, 0.09) 0.03 (-0.02, 0.07) 0.01 (-0.03, 0.05) 0.01 (-0.02, 0.04)
Preparation (ref = Enema/Lax)        
   None 0.23 (0.13, 0.33) 0.23 (0.15, 0.31) 0.20 (0.09, 0.31) 0.17 (0.09, 0.25) 0.17 (0.11, 0.24) 0.09 (0.03, 0.14) 0.09 (0.04, 0.13)
   Special Diet -0.13 (-0.24, -0.02) -0.13 (-0.24, -0.02) -0.17 (-0.29, -0.05) -0.09 (-0.18, -0.01) -0.09 (-0.17, -0.01) -0.02 (-0.08, 0.04) -0.02 (-0.08, 0.04)
Specificity (ref = 50%)        
   100% 0.07 (-0.03, 0.17) 0.07 (-0.02, 0.17) 0.16 (0.05, 0.27) 0.06 (-0.02, 0.14) 0.06 (-0.01, 0.13) 0.01 (-0.05, 0.06) 0.01 (-0.04, 0.06)
   80% -0.09 (-0.19, 0.02) -0.09 (-0.17, -0.01) -0.17 (-0.28, -0.05) -0.06 (-0.22, 0.09) -0.06 (-0.13, -0.01) 0.03 (-0.03, 0.09) 0.03 (-0.02, 0.07)
Sensitivity (ref = 40%)        
   90% 0.19 (0.09, 0.29) 0.19 (0.10, 0.27) 0.22 (0.11, 0.33) 0.14 (0.06, 0.22) 0.14 (0.07, 0.0.21) 0.13 (0.08, 0.18) 0.13 (0.08, 0.18)
   70% 0.10 (-0.01, 0.21) 0.10 (0.01, 0.20) 0.13 (0.01, 0.25) 0.08 (-0.01, 0.16) 0.08 (0.01, 0.15) 0.01 (-0.05, 0.07) 0.01 (-0.04, 0.06)
Cost (ref=$10)        
   $50 0.16 (-0.03, 0.35) 0.16 (0.04, 0.28) 0.25 (0.05, 0.45) 0.12 (-0.03, 0.27) 0.12 (0.02, 0.21) -0.05 (-0.16, 0.05) -0.05 (-0.12, 0.02)
   $250 -0.08 (-0.28, 0.12) -0.08 (-0.27, 0.11) -0.26 (-0.48, -0.04) -0.07 (-0.22, 0.09) -0.07 (-0.22, 0.09) -0.10 (-0.20, 0.01) -0.10 (-0.22, 0.02)
   $500 -0.32 (-0.54, -0.09) -0.32 (-0.52, -0.11) -0.28 (-0.63, -0.04) -0.25 (-0.43, -0.08) -0.25 (-0.42, -0.09) -0.33 (-0.45,- 0.21) -0.33 (-0.45, -0.21)
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