April 9, 2014

Support in Principle for U.S.-EU Trade Pact

But Some Americans and Germans Wary of TTIP Details

Survey Methods

Pew Research Center
In association with the Bertelsmann Foundation
February – March 2014 Survey

This report is based on telephone surveys in the United States and Germany.

In the U.S., interviews were conducted February 27 to March 2, 2014 among a national sample of 1,002 adults, 18 years of age or older, living in all 50 U.S. states and the District of Columbia (500 respondents were interviewed on a landline telephone, and 502 were interviewed on a cell phone, including 272 who had no landline telephone). Interviews were done in English and Spanish. The survey was conducted by interviewers at Princeton Data Source under the direction of Princeton Survey Research Associates International. Statistical results are weighted to account for probability of being included in the sample and to correct known demographic discrepancies. The margin of sampling error for the complete set of weighted data is ± 3.6 percentage points.

In Germany, interviews were conducted February 25-26, 2014 among a national sample of 953 persons, 18 years of age or older, living in the Federal Republic of Germany (761 respondents were interviewed on a landline telephone and 192 were interviewed on a cell phone). Interviews were exclusively conducted in German. The survey was conducted by interviewers employed and supervised by TNS Emnid, Bielefeld. Statistical results are weighted to account for probability of being included in the sample and to correct known demographic discrepancies. The margin of sampling error for the complete set of weighted data is ± 4.2 percentage points.