The data of wave 1-7 and CILS4COVID (wave 4, 5, 6, 7 and CILS4COVID only for Germany) are available from GESIS Data Archive for the Social Sciences in Cologne, Germany. Researchers will be asked to fill out a data user agreement before getting finally access to the data.
Please notice, in the section documentation we provide full information on technical reports, questionnaires and codebook on this webpage.
-> apply for CILS4EU data here
Full vs. reduced version
Due to data security reasons, two different versions are available for each data set:
(1) Full version:
- version with complete information collected during the survey
- available only for on-site use within the facilities of the Secure Data Center (SDC) of the GESIS Data Archive for the Social Sciences in Cologne
(2) Reduced version:
- version in which some information has been reduced and aggregated in order to prevent the identification of single respondents
- available for download and off-site use
The structure of the full and reduced version is identical. That means that in both versions the same variables are included, but they contain different information. Variables with reduced or aggregated information are marked with an “RV” at the end of the variable name.
Our codebook (specifically Appendix F) gives you an excellent overview about all variables that were not included or slightly edited in the reduced version. Feel free to inform yourself if the information you are targeting on will be sufficiently included.
Please be aware that the full version is only available for on-site use within the facilities of the Secure Data Center (SDC) of the GESIS Data Archive for the Social Sciences in Cologne, Germany. Only the reduced version is approachable for off-site use: it is downloadable in form of scientific use files (SUF) after signing a contract. Before filling out the data user agreement, users have to indicate which version they want to apply for.
CILS4EU vs. CILS4EU-DE
Users can choose between the first three waves of all four countries (CILS4EU, W1-3) or the follow-up study in Germany (CILS4EU-DE, W4-7 and CILS4COVID).
Next steps for the future
Our major goal is to store all available waves of CILS4EU at the same place and make them successively available to the international research community in the form of scientific use files. For the future, we plan to establish an enduring data infrastructure project which offers new pathways for the research on the integration of immigrants in Europe.