DALSC offers a rare possibility to work with a combination of data from surveys and administrative registers.
The surveys are repeated every three to four years. Six waves of the survey (1996, 1999, 2003, 2007, 2011 and 2014) have been completed at this point in time. Results from the sixth wave will be published in the summer of 2016. Detailed information about the material used in all waves of the survey is available in the menu.
Repeatedly used variables
The questions asked in the questionnaires vary over time for two main reasons. Firstly, the survey spans almost the entire life of the children (from 6 months in 1996 to 18 years old in 2014) which means that the children have passed through different developmental stages, requiring different questions. Secondly, the questionnaires have been continuously developed: in order to allow for new questions to enter the questionnaires while other questions have had to be removed.
The administrative registers hold information about a lot of background variables (e.g. education, income, criminal record, medical history and members of the same household). In most cases the registers cover the period from 1981 until present day minus two years. Typically, variables are updated once a year, although some variables are available at shorter intervals.