7 year Follow-up
The 7-year follow-up data collection was carried out from November 2005 until July 2010.
A total of 57,000 observations were collected from the mothers (fathers) of the 7-year olds in the DNBC. Please find below the code book for the 7-year questionnaire as well as supplementary information about the data. Both documents are available in a Danish and English version.
The 7-year follow-up questionnaire existed both in an on-line and a paper version.
7-year follow-up data documentation
- Code book 7-year follow-up (pdf)
- Supplementary document 7-year follow-up (pdf)
- Code book 7-year follow-up in Danish (pdf)
- Supplementary document 7-year follow-up in Danish (pdf)
Papers letters in the 7-year follow-up
The letters were sent to the parent who lived on the same address as the child.