Advantages of linking national registries with twin registries for epidemiological research

Linking national registries with twin data represents an opportunity to produce epidemiological research of high quality. National registries contain information on a broad array of variables, some of which cannot be measured reliably in regular health surveys. By taking kinship into consideration,...

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Main Authors: Line C. Gjerde, Fartein Ask Torvik, Kristian Amundsen Østby, Gun Peggy Knudsen, Nikolai Czajkowski, Ted Reichborn-Kjennerud, Ragnhild E. Ørstavik
Format: Article
Language:English
Published: Norsk Forening for Epidemiologi 2016-07-01
Series:Norsk Epidemiologi
Online Access:https://www.ntnu.no/ojs/index.php/norepid/article/view/2020
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author Line C. Gjerde
Fartein Ask Torvik
Kristian Amundsen Østby
Gun Peggy Knudsen
Nikolai Czajkowski
Ted Reichborn-Kjennerud
Ragnhild E. Ørstavik
author_facet Line C. Gjerde
Fartein Ask Torvik
Kristian Amundsen Østby
Gun Peggy Knudsen
Nikolai Czajkowski
Ted Reichborn-Kjennerud
Ragnhild E. Ørstavik
author_sort Line C. Gjerde
collection DOAJ
description Linking national registries with twin data represents an opportunity to produce epidemiological research of high quality. National registries contain information on a broad array of variables, some of which cannot be measured reliably in regular health surveys. By taking kinship into consideration, twin studies have the benefit of being able to identify confounding stemming from genetic or shared environmental sources. In this paper, we use examples from our own interview and questionnaire-based twin studies from the Norwegian Twin Registry (NTR) on mental disorders, alcohol use and socioeconomic status linked to registry data on medical benefits to demonstrate the value. In the first example, we examined to what extent genetic and environmental factors contributed to sick leave and disability pension and the association between these two types of benefits. In the second example, we explored the genetic and environmental relationship between personality disorders and sick leave. In the third example, a co-twin control design was applied to explore whether there is a true protective relationship between moderate alcohol consumption and health. The fourth example shows to what degree anxiety and depression are associated with later sick leave granted for not only mental disorders, but also somatic disorders, adjusted for confounding by genetic and shared environmental factors. In the fifth example, we address the socioeconomic gradient in sick leave, adjusting for non-observed confounders associated with the family in a co-twin control design. Our examples illustrate some of the potentials obtainable by linking national registries with twin data. The efforts that have been made to create the NTR in Norway and the International Network of Twin Studies (INTR) internationally make these types of linkage studies easier to conduct and available to more researchers. As there are still many areas to explore, we encourage epidemiological researchers to make use of this possibility.
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spelling doaj.art-2eaf2ad98dee4d1caf065c74fccf93e62022-12-22T00:49:15ZengNorsk Forening for EpidemiologiNorsk Epidemiologi0803-24912016-07-01261-210.5324/nje.v26i1-2.2020Advantages of linking national registries with twin registries for epidemiological researchLine C. GjerdeFartein Ask TorvikKristian Amundsen ØstbyGun Peggy KnudsenNikolai CzajkowskiTed Reichborn-KjennerudRagnhild E. ØrstavikLinking national registries with twin data represents an opportunity to produce epidemiological research of high quality. National registries contain information on a broad array of variables, some of which cannot be measured reliably in regular health surveys. By taking kinship into consideration, twin studies have the benefit of being able to identify confounding stemming from genetic or shared environmental sources. In this paper, we use examples from our own interview and questionnaire-based twin studies from the Norwegian Twin Registry (NTR) on mental disorders, alcohol use and socioeconomic status linked to registry data on medical benefits to demonstrate the value. In the first example, we examined to what extent genetic and environmental factors contributed to sick leave and disability pension and the association between these two types of benefits. In the second example, we explored the genetic and environmental relationship between personality disorders and sick leave. In the third example, a co-twin control design was applied to explore whether there is a true protective relationship between moderate alcohol consumption and health. The fourth example shows to what degree anxiety and depression are associated with later sick leave granted for not only mental disorders, but also somatic disorders, adjusted for confounding by genetic and shared environmental factors. In the fifth example, we address the socioeconomic gradient in sick leave, adjusting for non-observed confounders associated with the family in a co-twin control design. Our examples illustrate some of the potentials obtainable by linking national registries with twin data. The efforts that have been made to create the NTR in Norway and the International Network of Twin Studies (INTR) internationally make these types of linkage studies easier to conduct and available to more researchers. As there are still many areas to explore, we encourage epidemiological researchers to make use of this possibility.https://www.ntnu.no/ojs/index.php/norepid/article/view/2020
spellingShingle Line C. Gjerde
Fartein Ask Torvik
Kristian Amundsen Østby
Gun Peggy Knudsen
Nikolai Czajkowski
Ted Reichborn-Kjennerud
Ragnhild E. Ørstavik
Advantages of linking national registries with twin registries for epidemiological research
Norsk Epidemiologi
title Advantages of linking national registries with twin registries for epidemiological research
title_full Advantages of linking national registries with twin registries for epidemiological research
title_fullStr Advantages of linking national registries with twin registries for epidemiological research
title_full_unstemmed Advantages of linking national registries with twin registries for epidemiological research
title_short Advantages of linking national registries with twin registries for epidemiological research
title_sort advantages of linking national registries with twin registries for epidemiological research
url https://www.ntnu.no/ojs/index.php/norepid/article/view/2020
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