The core of the the data infrastructure is the detailed follow up health data of all citizens born from 1987 and later in Denmark, Sweden and Finland. Information from pregnancy and birth, in- and outpatient diagnoses (ICD-10 in Finland and Denmark from 1995), prescribed medication and contracts with the health system  enables research in both a cross country perspective. Using data from all three countries provides an opportunity to study

  • rare diseases and events
  • compare life course trajectories between countries, regions, municipalities down too school level and according to socioeconomic factors
  • fetal programming hypotheses
  • natural experiments based on local policies and demographic differences

The core is the similarity in data collection over time across countries on the platform


We have linked up additional data for part of the cohort and in some countries and not other. We are working to get Norway and Island included in the initiative.

In Finland extensive information has been collected about the generations born in 1987 and in 1997. Two sub cohorts, each consisting of about 60,000 individuals, have been established including more specific information on their parental and family background as well as on follow-up, covering also information on welfare services, education, employment, income etc.

In Denmark we have linked to:

  • Educational registers of the educational system, the public school well-being measure 2015-2016 (Folkeskolens Trivselsmål), national tests  2011-2017, absence data 2011-2015 and grades from final exams 2011-2015.
  • Data from the 70+ of 98 Danish municipalities
  • Ad hoc cohorts such as the Danish national birth cohort, FOCA, ABC and more


We are collaborating across scientific fields to develop secure and meaningful use of data.