Table 1.

Personalised nutrition service attributes and levels

Service attribute	Service attribute levels
Personal information	Low-quantity private information: Lifestyle Mid-quantity sensitive information: Lifestyle + Phenotype Mid-quantity unique information: Lifestyle + DNA High-quantity unique information: Lifestyle + Phenotype + DNA
Service provider	Consultancy + dietician Fitness club + dietician Employer + dietician
Communication mode	No personal contact Personal contact
Advice scope	Nutrition advice Nutrition advice + Exercise advice Nutrition advice + Exercise advice + Group support meetings
Advice frequency	One-off Monthly

^aAll services required contact details (name, address) and individual information (height, weight, gender, and age)

^bLifestyle = dietary intake and physical activity