The aim of the register | The Danish Twin Register (DTR) is one of the world’s oldest twin registers. It was established in the 1950s to study the causes of cancer. Over the following half century, the register was expanded and now includes twin births from over the past 125 years. Medical research continues to be the key aspect for the many Danish and foreign researchers affiliated with the register. |
Responsible authority | University of Southern Denmark Tel.: +45 65 50 30 47. Fax.: +45 65 90 69 38. |
Contact | Researchers who are not affiliated with the register can obtain information about the use of the register upon request. |
Population | 1870-1930: 19,000 pairs |
Variables | Statistical master data from church records and the Danish Civil Registration System. Information on health and lifestyle. Information on causes of death. |
Updates | The register is updated via questionnaire-based studies, interviews and clinical studies. |
Source | 1870-1930: Information from church records |
Period covered | 1870-2000 for the entire country. |
References | Brix, T.H., Hansen, P.S., Kyvik, K.O, Hegedus, L. (2000): Cigarette smoking and risk of clinically overt thyroid disease: a population-based twin case control study. Archive of Internal Medicine, 160:661-666. |