May 12, 2014

A Fragile Rebound for EU Image on Eve of European Parliament Elections

Methods in Detail

About the 2014 Spring Pew Global Attitudes Survey

Results for the survey are based on telephone and face-to-face interviews conducted under the direction of Princeton Survey Research Associates International. Survey results are based on national samples. For further details on sample designs, see below.

The descriptions below show the margin of sampling error based on all interviews conducted in that country. For results based on the full sample in a given country, one can say with 95% confidence that the error attributable to sampling and other random effects is plus or minus the margin of error. In addition to sampling error, one should bear in mind that question wording and practical difficulties in conducting surveys can introduce error or bias into the findings of opinion polls.

Country: France
Sample design: Random Digit Dial (RDD) sample of landline and cell phone households with quotas for gender, age and occupation and stratified by region and urbanity
Mode: Telephone adults 18 plus
Languages: French
Fieldwork dates: March 17 – April 1, 2014
Sample size: 1,003
Margin of Error: +/-4.1 percentage points
Representative: Telephone households (roughly 99% of all French households)
Country: Germany
Sample design: Random Digit Dial (RL(2)D) probability sample of landline households, stratified by administrative district and community size, and cell phone households
Mode: Telephone adults 18 plus
Languages: German
Fieldwork dates: March 17 – April 2, 2014
Sample size: 1,000
Margin of Error: +/-4.0 percentage points
Representative: Telephone households (roughly 99% of all German households)
Country: Greece
Sample design: Multi-stage cluster sample stratified by region and urbanity
Mode: Face-to-face adults 18 plus
Languages: Greek
Fieldwork dates: March 22 – April 9, 2014
Sample size: 1,000
Margin of Error: +/-3.7 percentage points
Representative: Adult population (excluding the islands in the Aegean and Ionian Seas, or roughly 6% of the population)
Country: Italy
Sample design: Multi-stage cluster sample stratified by region and urbanity
Mode: Face-to-face adults 18 plus
Languages: Italian
Fieldwork dates: March 18 – April 7, 2014
Sample size: 1,000
Margin of Error: +/-4.3 percentage points
Representative: Adult population
Country: Poland
Sample design: Multi-stage cluster sample stratified by province and urbanity
Mode: Face-to-face adults 18 plus
Languages: Polish
Fieldwork dates: March 17 – April 8, 2014
Sample size: 1,010
Margin of Error: +/-3.6 percentage points
Representative: Adult population
Country: Spain
Sample design: Random Digit Dial (RDD) probability sample of landline and cell phone-only households stratified by region
Mode: Telephone adults 18 plus
Languages: Spanish/Castilian
Fieldwork dates: March 17 – March 31, 2014
Sample size: 1,009
Margin of Error: +/-3.2 percentage points
Representative: Telephone households (roughly 97% of Spanish households)
Country: United Kingdom
Sample design: Random Digit Dial (RDD) probability sample of landline households, stratified by government office region, and cell phone-only households
Mode: Telephone adults 18 plus
Languages: English
Fieldwork dates: March 17 – April 8, 2014
Sample size: 1,000
Margin of Error: +/-3.4 percentage points
Representative: Telephone households (roughly 98% of all households in the United Kingdom)

Cite this publication: “A Fragile Rebound for EU Image on Eve of European Parliament Elections.” Pew Research Center, Washington, D.C. (May 12, 2014) http://www.pewglobal.org/2014/05/12/a-fragile-rebound-for-eu-image-on-eve-of-european-parliament-elections/, accessed on July 23, 2014.