Raw data sets from various surveys are separated to two sections: longitudinal and single-survey. Data formats used are: SPSS, CSV and ODS. Some of the older data sets are only in ODS format. If needed, data can be provided also as SQL database table.
Longitudinal studies are data sources that contain observations of the same research units over a period of time. Such data can be collected either through surveys, or through linkage of administrative data.
One time surveys
One time surveys are conducted once. Such data sources offer snapshots of the selected research unit.