The influence of information sources on intention changes to receive COVID-19 vaccination: A prospective cohort study in Japan.

"Declarations Ethics approval and consent to participateEthical approval to conduct the present study was obtained from the ethics committee of the Osaka International Cancer Institute (approval number: 20084-6), and the ethics committee of the Institute of Medicine, University of Tsukuba (approval number: 1737). All participants provided web-based informed consent at registration. All procedures were performed in accordance with the ethical standards of the institutional and/or national research committees and the 1964 Declaration of Helsinki and its later amendments, or comparable ethical standards. Consent for publicationNot applicable. Availability of data and materialThe data that support the findings of this study are available from the corresponding author upon reasonable request. Competing interestsThe authors declare no conflict of interest. FundingThis study was supported by the Japan Society for the Promotion of Science (JSPS) KAKENHI Grants (grant numbers 17H03589, 19K10671, 19K10446, 18H03107, 18H03062, 19H03860 and 21H04856); the JSPS Grant-in-Aid for Young Scientists (grant number 19K19439); the Research Support Program to Apply the Wisdom of the University to Tackle COVID-19 Related Emergency Problems, University of Tsukuba, Health Labour Sciences Research Grant (grant numbers 19FA1005, 19FG2001 and 19FA1012); the Japan Agency for Medical Research and Development (AMED; grant number 2033648); and the Individual Research Allowance at Kanagawa University of Human Services. The findings and conclusions of this article are the sole responsibility of the authors and do not represent the official views of the research funders. Authors’ contributionsT. Tabuchi leaded conceptualization, design, and data acquisition. D. H. performed the statistical analysis, interpretated the results, and drafted the initial manuscript with T. Takahashi, Y. K., A. O., and T. Tabuchi. All the authors have read and approved to the final version of manuscript. AcknowledgementsWe thank all the respondents for participating. We appreciate valuable feedback from the JACSIS and JASTIS study group researchers. Competing interests The authors declare no conflict of interest."

"Funding This study was supported by the Japan Society for the Promotion of Science (JSPS) KAKENHI Grants (grant numbers 17H03589, 19K10671, 19K10446, 18H03107, 18H03062, 19H03860 and 21H04856); the JSPS Grant-in-Aid for Young Scientists (grant number 19K19439); the Research Support Program to Apply the Wisdom of the University to Tackle COVID-19 Related Emergency Problems, University of Tsukuba, Health Labour Sciences Research Grant (grant numbers 19FA1005, 19FG2001 and 19FA1012); the Japan Agency for Medical Research and Development (AMED; grant number 2033648); and the Individual Research Allowance at Kanagawa University of Human Services. The findings and conclusions of this article are the sole responsibility of the authors and do not represent the official views of the research funders."