The GGP Data collection is conducted by the national teams that involve either national statistical offices or national research institutes or often both. The GGP programme, including the survey and its instruments are developed centrally by a consortium of leading European centres of population research. GGP participating countries implement the GGS questionnaire, developed by GGP working group on Measurement.
Since the countries themselves are resposnible for programme implementation, different standards may be used in different countries in data collection and data preparation. When different standards may be used in data collection, the data users would have anturally thought of a concern “Is the data sufficient for the cross – country comparability?”
The GGP Data Harmonization team is tasked to make the submitted data as cross – country comparable as possible. Before the data is available for the GGP users it will go through its production life cycle from processing, submission, harmonization, archiving and finally dissemination. The data disseminated through the GGP Data Archive are ready to be used in a cross-country comparative study.
Data file life cycle
The GGP data life cycle could be split into 3 main sections: