Table 2.

An example of a discrete choice question (translated version).

Vaccine Attributes	Vaccine A	Vaccine B
Severity of diseases prevented by a vaccine	15%	5%
Protection rate prevented by vaccines	80%	65%
Duration of vaccine-induced protection	1 year	5 year
Risk of severe side effects	Moderate risk	High risk
Location of vaccine manufacturer	Domestic	Imported
Out-of-pocket cost of the vaccine	0 yuan	150 yuan
Which vaccine would you prefer?	☐	☐
In reality, would you vaccinate your child with the option you chose above?	☐ YES ☐ NO