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Structural equation modeling of the associations between frequencies of social media exposure/interpersonal discussion and intentions of COVID-19 vaccination mediated through perceptions of effectiveness of COVID-19 vaccines (n = 1902). * p < 0.05; ** p < 0.01; *** p < 0.001. (a) Outcome: Intention of free COVID-19 vaccination; (b) Outcome: Intention of self-paid COVID-19 vaccination.
