Study title

Time series based on the years 1993 to 2000. This is a time series put together at NSD in July and August 2011. It consists of an extract of the relevant background variables and variables tied to questions on immigraion, retrieved from the Omnibus surveys from Statistics Norway for the period in question. Some of the variables are not included in the entire series, but rather are removed between surveys or are added after the beginning. Only variables which can be found in at least for years or more are included, in addition to a few which are introduced in the last years, and that are a part of this data set to make a potential future merger with new surveys easier. Some variables also changes slightly throughout the series (such as the educational variables). Where no possibility for merging can be found, these variables are kept separated in the data set. For more detailed information about the variables and the different surveys, refer to the individual documentation reports which can be found at .