Table 1.

Best–worst scaling survey attributes and levels

Attribute	Description	Attribute levels
Graft survival, years	The length of time that the transplanted organ could last	1, 5, 10, 20, 30
Serious adverse outcomes, %
Length of life	Chance of dying before the graft fails	0, 25, 50, 75, 100
Cancer	Chance of cancer other than skin cancer	0, 10, 20, 30, 50
Cardiovascular disease	Chance of serious heart disease	0, 10, 20, 30, 50
Diabetes	Chance of diabetes after transplant	0, 10, 20, 30, 50
Infection	Chance of serious infection	0, 10, 20, 30, 50
Potentially debilitating side effects, %
Weight gain	Chance of excessive weight gain	0, 25, 50, 75, 100
Cosmetic side effects	Chance of side effects that will change appearance	0, 25, 50, 75, 100
Gastrointestinal side effects	Chance of severe diarrhoea or nausea	0, 25, 50, 75, 100