Annexes

• Pages: 48-77

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June 2018 Technical

specifications

Flash Eurobarometer 469

TECHNICAL SPECIFICATIONS

Between the 18 and 26 June 2018, TNS Political & Social, a consortium created between TNS political

& social, TNS UK and Kantar Belgium, carried out the FLASH EUROBAROMETER 469 survey on request

of the EUROPEAN COMMISSION, Directorate-General for Communications Networks, Content &

Technology. It is a general public survey co-ordinated by the Directorate-General for Communication,

“Media monitoring and analysis” Unit.

The FLASH EUROBAROMETER 469 survey covers the population of the respective nationalities of the

European Union Member States, resident in each of the 28 Member States and aged 15 years and

over.

All interviews were carried using the TNS e-Call centre (our centralised CATI system). In every country

the respondents were called both on fixed lines and mobile phones. The basic sample design applied

in all states is multi-stage random (probability). In each household, the respondent was drawn at

random following the last birthday rule.

TNS has developed its own RDD sample generation capabilities based on using contact telephone

numbers from responders to random probability or random location face -to-face surveys, such as

Eurobarometer, as seed numbers. The approach works because the seed number identifies a working

block of telephone numbers and reduces the volume of numbers generated that will be ineffective.

The seed numbers are stratified by NUTS2 region and urbanisation to approximate a geographically

representative sample. From each seed number the required sample of numbers are generated by

randomly replacing the last two digits. The sample is then screened against business databases in

order to exclude as many of these numbers as possible before goi ng into field. This approach is

consistent across all countries.

TS1

Illegal content online

June 2018 Technical

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Flash Eurobarometer 469

TS2