Young Danish twins - an update
All Danish twins born between 2001 and 2021 have received a letter from twin researchers in their own or their parents' digital mailbox. If you have received such a letter, you can help make twin studies of health and disease even better - also in the future.
The Danish Twin Registry has for many years served as a cornerstone for studies on how genes and environment affect health and disease. This is investigated by asking questions to large groups of identical and non-identical twins, regardless of whether they are sick or healthy.
We are now in the process of concluding an online questionnaire survey including twins born 2001- 2021 (but it is still possible to participate in the survey). The aim of this survey is to gain new knowledge about potential lasting effects of COVID-19. So far, more than 18,000 twins/parents of twins have completed the questionnaire, and we are currently analyzing the data collected. The results will be published on our website as soon as they are ready.
We are very grateful for the huge interest in this survey, and we would like to thank everyone who has taken the time to participate. You are helping us to make twin studies on health and disease even better.
How much do you resemble each other?
Many twins are often asked whether they are identical or non-identical, and in some cases, this is determined using a DNA test. In this study, we ask 4 simple questions about similarity, which have been shown to give the correct answer for over 95% of all twin pairs.
Lasting effects of COVID-19
The purpose of collecting this information is also to investigate why there were such large differences in how sick children and young people became during the COVID-19 pandemic, and why some of them developed lasting effects.