Correlates of COVID-19 conspiracy theory beliefs in Japan: A nationally-representative cross-sectional survey

BackgroundThe COVID-19 pandemic was associated with an increase in conspiracy theories worldwide. However, the prevalence of COVID-19 conspiracy beliefs among Japanese has remained unclear. This study aimed to estimate the prevalence and correlates of COVID-19 conspiracy beliefs in Japan using a nationwide survey of 28,175 residents aged 16-81 years old. MethodsA nationally representative, cross-sectional self-administered survey was conducted from September to October 2021. To assess the number of COVID-19 conspiracy beliefs, we used three questions from the Oxford Coronavirus Explanations, Attitudes, and Narratives Survey. Independent variables included general vaccine conspiracy beliefs, sociodemographic variables, information sources for COVID-19, trust in authorities, and fear of COVID-19. ResultsAfter applying sampling weights and imputation, the estimated prevalence of holding at least one COVID-19 conspiracy belief was 24.4%. From a linear regression model, several factors were independently associated with conspiracy beliefs. Notably, people with the lowest level of education (lower secondary school) endorsed fewer COVID-19 conspiracy beliefs (B -0.089, vs. upper secondary school). Furthermore, higher socioeconomic backgrounds-such as higher income, higher wealth, and regular employment-were associated with endorsing conspiracy beliefs. Additionally, only 37.3% of respondents trusted the government of Japan, but paradoxically, trust in the government was positively associated with conspiracy beliefs (B 0.175, vs. distrust). ConclusionsConspiracy beliefs about COVID-19 were prevalent in about a quarter of the Japanese population. Certain groups are more likely to endorse conspiracy beliefs, and targeting interventions towards these groups might be efficient in stemming the spread of conspiracy beliefs.