The fifth wave is based on a nationally representative probability sample of the population aged 18 and above. In most countries, the sample includes 2,400 citizens. The data were conducted in face-to-face public opinion surveys (CAPI and PAPI). See technical reports by country for country-specific information.
Note that the data of the fifth wave are not available for public use yet. We hope to release the full data set approximately in September 2019.