Table 4

Magnitude and direction of preferences for each attribute

All participantsParticipants responding rationally
AttributeLevelsCoefficient (95% CI)p ValueCoefficient (95% CI)p Value
Bowel preparationNon-laxative−3.834 (−4.47 to −3.20)<0.0005−4.672 (−5.38 to −3.96)<0.0005
Reduced-laxative−4.339 (−4.97 to −3.71)<0.0005−5.356 (−6.07 to −4.64)<0.0005
Full-laxative−5.157 (−5.82 to −4.50)<0.0005−6.346 (−7.10 to −5.59)<0.0005
SensitivityNA—continuous0.207 (0.18 to 0.23)<0.00050.257 (0.23 to 0.29)<0.0005
SpecificityNA—continuous−0.002 (−0.08 to 0.07)0.9530.025 (−0.06 to 0.11)0.558
  • NA, not applicable.