Numbers, Facts and Trends Shaping Your World

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  • report

    Number of Muslims Worldwide Expected to Nearly Equal Number of Christians by 2050; Religiously Unaffiliated Will Make Up Declining Share of World’s Population

    Media Contact: Katherine Ritchey, Communications Manager 202-419-4372, kritchey@pewresearch.org Washington, April 2, 2015 — The religious profile of the world is rapidly changing, driven primarily by differences in fertility rates and the size of youth populations among the world’s major religions, as well as by people switching faiths. Over the next four decades, Christians will continue to […]

  • report

    Methods

    Recruitment All current members of the American Trends Panel (ATP) were originally recruited from the 2014 Political Polarization and Typology Survey, a large (n=10,013) national landline and cellphone RDD survey conducted Jan. 23- March 16, 2014, in English and Spanish. At the end of that survey, respondents were invited to join the panel. The invitation […]

  • report

    About the Survey

    The analysis in this report is based on telephone interviews conducted March 25-29 among a national sample of 1,500 adults, 18 years of age or older, living in all 50 U.S. states and the District of Columbia (525 respondents were interviewed on a landline telephone, and 975 were interviewed on a cell phone, including 567 […]