The Danish Twin Registry

Scand J Public Health. 2011 Jul;39(7 Suppl):75-8. doi: 10.1177/1403494810387966.


Introduction: The Danish Twin Registry is a unique source for studies of genetic, familial and environmental factors on life events, health conditions and diseases.

Content: More than 85,000 twin pairs born 1870-2008 in Denmark.

Validity and coverage: Four main ascertainment methods have been employed. Completeness of ascertainment varies according to birth cohorts. For birth cohorts 1870-1930 both twins should survive to age 6 years. From 1931-1968 72% of all twin pairs has been ascertained, with complete ascertainment of all live born twins since 1968.

Conclusion: Because twins have been identified independent of traits and on a population basis, the Danish Twin Registry is well suited for studies to understand the influence of genetic and environmental factors for a wide variety of diseases and traits.

Publication types

  • Research Support, N.I.H., Extramural
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Adult
  • Child
  • Denmark / epidemiology
  • Diseases in Twins / epidemiology
  • Diseases in Twins / genetics
  • Female
  • Humans
  • Male
  • Registries* / standards
  • Twins* / genetics