Table 1.

List of attribute and levels

Attribute	Level	Description
Cost (￥)	100	Each follow-up cost is ￥100.
	300	Each follow-up cost is ￥300.
	500	Each follow-up cost is ￥500.
Thoroughness	Very thorough	Service providers answer your questions very clearly and completely. Not only to solve the problems associated with the disease but also to answer the questions related to social psychology, quality of life and so on.
	General thorough	Service providers clearly explain the problems associated with disease, but pay less attention to the questions related to social psychology, quality of life and so on.
Provider	Gastrointestinal surgeon	They have received specialised training in the diagnosis and treatment of gastrointestinal surgery.
	General practitioner	They provides person centred, continuing, comprehensive and coordinated whole person healthcare to individuals and families in their communities. This is patients own local doctor whom patients normally see when they get sick (eg, coughs and colds, blood pressure, diabetes, infections, etc).
	Specialised nurse	A registered nurse who has completed extra study in the specialty of gastrointestinal nursing or its equivalent.
Way	Face to face	You will be face-to-face with the service provider.
	Telephone or We-chat	You will communicate with the service provider by telephone or We-chat.
	Alternate between face-to-face and telephone/We-chat	If you communicate with the service provider by telephone/We-chat this time, next time is face-to-face communication, etc.
Continuity	Yes	Follow-up services were performed by the same person.
	No	Follow-up services may be performed by different people.
Supplementary services	Treatment of complications	The main supplementary service is the treatment of complications.
	Psychosocial support	The main supplementary service is psychosocial support.
	Health behaviour suggestions	Staff members provide you with advice, such as diet and exercise, to both develop and maintain good health and reduce the risk of gastric cancer returning.