Funding for this research was provided by:
Japan Agency for Medical Research and Development (17lk0310039j0001, 16lk0310024j0101)
Text and Data Mining valid from 2019-09-09
Received: 1 February 2019
Accepted: 29 August 2019
First Online: 9 September 2019
Ethics approval and consent to participate
: The ISSP General Assembly approved questions based on their scientific merit, sociopolitical relevance and ethical appropriateness. All participating countries had to comply with the given legal requirements in each country. Before depositing data to the ISSP Archive national ISSP data are anonymized so that individual survey participants cannot be identified (see International Social Survey Programme ethical statement on ExternalRef removed). With regard to World Bank data, no human subjects are involved.
: Not applicable.
: The authors declare that they have no competing interests.