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Table 5 Estimates of coefficients of patient choice of Test A and Test B (Stage-one 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 0.24 (0.11, 0.36) 0.24 (0.14, 0.33) 0.23 (0.09, 0.36) 0.18 (0.09, 0.28) 0.18 (0.11, 0.26) 0.16 (0.10, 0.23) 0.16 (0.12, 0.21)
   Scope -0.25 (-0.38, -0.13) -0.25 (-0.34, -0.17) -0.29 (-0.42, -0.15) -0.19 (-0.29, -0.09) -0.19 (-0.26, -0.11) -0.12 (-0.18, -0.05) -0.12 (-0.16, -0.08)
   CT -0.14 (-0.27, -0.01) -0.14 (-0.25, -0.02) -0.13 (-0.27, -0.01) -0.10 (-0.20, -0.001) -0.10 (-0.19, -0.01) -0.08 (-0.15, -0.02) -0.08(-0.14, -0.01)
No Pain (ref = mild pain) 0.04 (-0.03, 0.11) 0.04 (-0.01, 0.09) 0.04 (-0.04, 0.12) 0.04 (-0.01, 0.09) 0.03 (-0.01, 0.07) 0.02 (-0.01, 0.06) 0.02 (-0.01, 0.05)
Preparation (ref = Enema/Lax)        
   None 0.18 (0.09, 0.28) 0.18 (0.11, 0.26) 0.18 (0.08, 0.28) 0.14 (0.07, 0.22) 0.14 (0.09, 0.20) 0.10 (0.05, 0.16) 0.10 (0.07, 0.14)
   Special Diet -0.21 (-0.32, -0.11) -0.21 (-0.29, -0.14) -0.24 (-0.35, -0.13) -0.16 (-0.25, -0.08) -0.16 (-0.22, -0.10) -0.11 (-0.16, -0.05) -0.11 (-0.14, -0.07)
Specificity (ref = 50%)        
   100% 0.14 (0.04, 0.25) 0.14 (0.04, 0.25) 0.15 (0.04, 0.26) 0.11 (0.03, 0.19) 0.11 (0.03, 0.19) 0.08 (0.03, 0.14) 0.08 (0.04, 0.13)
   80% -0.29 (-0.39, -0.19) -0.29 (-0.37, -0.21) -0.33 (-0.44, -0.23) -0.22 (-0.30, -0.14) -0.22 (-0.29, -0.16) -0.17 (-0.22, -0.11) -0.17 (-0.21, -0.12)
Sensitivity (ref = 40%)        
   90% -0.07 (-0.17, 0.03) -0.07 (-0.14, 0.01) -0.07 (-0.17, 0.04) -0.04 (-0.12, 0.03) -0.04 (-0.10, 0.01) -0.04 (-0.10, 0.02) -0.04 (-0.08, 0.01)
   70% 0.20 (0.09, 0.31) 0.20 (0.10, 0.30) 0.20 (0.08, 0.32) 0.16 (0.07, 0.25) 0.16 (0.09, 0.24) 0.15 (0.09, 0.21) 0.15 (0.10, 0.20)
Cost (ref=$10)        
   $50 0.59 (0.40, 0.78) 0.59 (0.46, 0.72) 0.66 (0.46, 0.85) 0.45 (0.30, 0.60) 0.45 (0.35, 0.55) 0.39 (0.29, 0.49) 0.39 (0.32, 0.46)
   $250 0.15 (-0.04, 0.35) 0.15 (0.02, 0.29) 0.14 (-0.06, 0.35) 0.11 (-0.05, 0.26) 0.11 (-0.01, 0.21) 0.10 (0.00, 0.20) 0.10 (0.04, 0.17)
   $500 0.52 (0.28, 0.76) 0.52 (0.34, 0.70) 0.57 (0.32, 0.83) 0.39 (0.20, 0.57) 0.39 (0.25, 0.52) 0.27 (0.15, 0.39) 0.27 (0.19, 0.36)
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