Appendix A: Methodology

By Pew Research Center's Religion & Public Life Project This appendix provides an overview of the data sources and analytic approaches used in the report. The general population data underlying this study come from 106 countries for religious identity, 106 countries for the importance of religion, 105 countries for prayer frequency and 102 countries for religious service attendance. The countries where religious service attendance […] …read more

Read more here:: http://www.pewforum.org/2018/06/13/appendix-a-methodology-9/