Table 1.

Attributes and Levels Used in the Discrete Choice Experiment.

Attributes	Levels	Descriptions
Vaccine effectiveness	40%	Protects 40% of vaccinated
	60%	Protects 60% of vaccinated
	85%	Protects 85% of vaccinated
Vaccine related side-effects	50/100,000	50 out of 100,000 risk of severe side effect
	10/100,000	10 out of 100,000 risk of severe side effect
	1/100,000	1 out of 100,000 risk of severe side effect
Access to vaccine	Free and voluntary	Vaccine is free and it is voluntary to get vaccinated.
	Free and compulsory	Vaccine is free and it is compulsory to get vaccinated
	Chargeable and voluntary	You must pay for vaccine yourself, but vaccination is voluntary.
Number of doses	One dose	One dose
	≥2 doses	Two or more doses
Vaccination sites	First level	Village clinic or community health station
	Second level	Township or community health centre
	Third level	County hospital and above
Duration of vaccine protection	Six months	Six months of vaccine protection
	One year	One year of vaccine protection
	More than two years	More than two years
Acquaintances vaccinated	30%	30% of your family, friends and acquaintances already vaccinated
	60%	60% of your family, friends and acquaintances already vaccinated
	90%	90% of your family, friends and acquaintances already vaccinated