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Table 1 A sample best-worst choice task

From: Parents and adolescents preferences for asthma control: a best-worst scaling choice experiment using an orthogonal main effects design

Considering the following choices of attributes and their levels, please indicate which one you consider as the most preferred (best) and which one you consider as the least preferred (worst) attribute in asthma control. Please choose only one best and only one worst.
Best   Worst
Night-time symptoms:
Wheezing or tightening of chest:
Chest tightening or wheezing, but it is manageable (does not worsen)
Changing medication:
More doses or adding on another medication needed
Emergency visits:
4 Emergency room visits per year
Limitation of physical activities:
10 limitations per month