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Table 1 Attributes and levels of the DCE, along with corresponding questions from the questionnaire

From: Consistency between stated and revealed preferences: a discrete choice experiment and a behavioural experiment on vaccination behaviour compared

Attributes Variable name Levels (coding in analyses)
Infection Risk without vaccination INFR (-1) unknown to you
(1) 1 to 500
Side effects of vaccination SIDE (-1) unknown to you
(1) comparable to regular vaccination
Possibility to choose for hepatitis B or not CHOICE (-1) you cannot choose whether to vaccinate your child with or without the hepatitis B vaccine
(1) you can choose whether to vaccinate your child with or without the hepatitis B vaccine
Source of information that the vaccine is safe NIH (0) GP
WFC (-1) a folder by the National institute of health
(1) the child welfare centre
Source of information that the vaccine causes problems (a child has been hospitalized after getting the vaccine) SCM (0) the news on TV
ACQ (-1) social media (e.g. facebook, twitter, blog)
(1) acquaintance
Attitude of social environment (Number of friends getting their child vaccinated) FRI (-1) none of your friends
(1) all of your friends