Methodology 2014

TNS Opinion was commissioned to conduct the survey using Computer Assisted Telephone
Interviews in all countries except Poland, Russia, and Turkey, where lower telephone
penetration necessitated the use of face-to-face interviews.

In all countries but Russia, a random sample of approximately 1,000 men and women, 18
years of age and older, was interviewed; in Russia the sample size was 1,500. Interviews were
conducted primarily between June 2 and June 25, 2014.

For results based on the national samples in each of the 13 countries surveyed, one can
say with 95% confidence that the maximum margin of error attributable to sampling and
other random effects is plus or minus three percentage points. For results based on the total
European sample, the margin of error is plus or minus one percentage point. In addition to
sampling error, question wording and practical difficulties in conducting surveys can also
introduce error or bias into the findings of public opinion polls.

For trended questions first asked before 2010, averages were weighted on the basis of the size
of the adult population in each country to maintain consistency with previous years’ reports.
For questions that started in 2010 or later, the results were also weighted so that the sample
matches certain population characteristics, including age, gender, education, and region.
When processing is complete, data from the survey are deposited with the Inter-University
Consortium for Political and Social Research at the University of Michigan (ICPSR), the Roper
Center for Public Opinion Research at the University of Connecticut, and the GESIS-Leibniz
Institute for the Social Sciences and are available to scholars and other interested parties.

Note on European Averages
Over time, additional European countries have been added to the survey. While the addition of
new countries has affected the Europe-wide average, the impact has usually not been statistically
significant. Therefore, for ease of presentation, we have treated several different averages as if
they were part of one average. When the EU average is reported for previous years, this is based
on the EU-7 average from 2002-03, the EU-8 average from 2004-10, the EU-9 average from
2011-13, and the EU-10 average for 2014.

European Averages Reported
EU7 2002-03 U.K., France, Germany, the Netherlands, Italy, Poland, and Portugal
EU8 2004-10 EU7 countries plus Spain
EU9 2011-13 EU8 countries plus Sweden
EU10 2014 EU9 countries plus Greece

Total Coverage
YEAR TOTAL COVERAGE EUROPEAN COVERAGE
2002 U.S. + E6 France, Germany, Italy, the Netherlands, Poland, U.K.
2003 U.S. + E7 France, Germany, Italy, the Netherlands, Poland, U.K., Portugal
2004- 05 U.S. + E10 France, Germany, Italy, the Netherlands, Poland, U.K., Portugal, Turkey, Slovakia, Spain
2006-10 U.S. + E12 France, Germany, Italy, the Netherlands, Poland, U.K., Portugal, Turkey, Slovakia, Spain, Bulgaria, Romania
2011 U.S. + E13 France, Germany, Italy, the Netherlands, Poland, U.K., Portugal, Turkey, Slovakia, Spain, Bulgaria, Romania, Sweden
2012 U.S. + E13 + Russia France, Germany, Italy, the Netherlands, Poland, U.K., Portugal, Turkey, Slovakia, Spain, Bulgaria, Romania, Sweden
2013 U.S. + E12 France, Germany, Italy, the Netherlands, Poland, U.K., Portugal, Turkey, Slovakia, Spain, Romania, Sweden
2014 U.S. + E11 + Russia France, Germany, Greece, Italy, the Netherlands, Poland, U.K., Portugal, Turkey, Spain