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    Methodology

    Survey methodology Most of the analysis in this report is based on telephone interviews conducted May 25 to June 29, 2016, among a national sample of 5,006 adults, 18 years of age or older, living in all 50 U.S. states and the District of Columbia (1,253 respondents were interviewed on a landline telephone, and 3,753 […]

  • report

    Methodology

    The analysis in this report is based on telephone interviews among a national sample of 5,000 adults. These respondents were originally among the 35,071 who were interviewed in the national telephone survey that served as the centerpiece of the Pew Research Center’s 2014 Religious Landscape Study; they were subsequently recontacted and asked additional questions. This […]

  • report

    The Twilight of Landline Interviewing

    By Courtney Kennedy, Kyley McGeeney and Scott Keeter Now that over 90% of U.S. adults have cellphones,[1. Stephen J. Blumberg and Julian V. Luke. Wireless substitution: Early Release of Estimates From the National Health Interview Survey, July–December 2015. National Center for Health Statistics. May 2016. Available from: http://www.cdc.gov/nchs/nhis.htm] survey researchers are considering whether it is necessary […]