Table 4.

Factors associated with parental acceptability of a free COVID-19 vaccination (N=1052).

Factors		AORa (95% CI)	P value
Perceptions related to COVID-19 vaccination based on the theory of planned behavior
	Positive Attitude Scale	1.70 (1.50-1.91)	<.001
	Negative Attitude Scale	0.93 (0.85-1.01)	.09
	Your family member would support you in having your child take up COVID-19 vaccination (ie, perceived subjective norm)	4.18 (3.21-5.43)	<.001
	Having your child receive the COVID-19 vaccination is easy for you if you want them to (ie, perceived behavioral control)	1.84 (1.49-2.26)	<.001
Influence of social media related to COVID-19 vaccination
	Frequency of exposure to positive information related to COVID-19 vaccination on social media	1.35 (1.17-1.56)	<.001
	Frequency of exposure to negative information related to COVID-19 vaccination on social media	0.85 (0.74-0.99)	.03
	Frequency of exposure to testimonials given by participants of the COVID-19 vaccine clinical trials on social media	1.07 (0.94-1.23)	.31
	Frequency of exposure to negative information about other vaccine incidents in China on social media	0.91 (0.79-1.05)	.20

^aAOR: adjusted odds ratio; background characteristics with P<.05 in the univariate analysis were adjusted in the multivariate logistic regression models.