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The U.S. Religious Landscape Survey completed telephone interviews with a nationally representative sample of 35,556 adults living in continental United States telephone households. The survey was conducted by Princeton Survey Research Associates International (PSRAI). Interviews were done in English and Spanish by Princeton Data Source, LLC (PDS), and Schulman, Ronca and Bucuvalas, Inc. (SRBI), from May 8 to Aug. 13, 2007. Statistical results are weighted to correct known demographic discrepancies.
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