Directory / Open datasets / HDB-0446

Danish Twin Registry

Danish Twin Research Center, University of Southern Denmark

HDB-0446

The Danish Twin Registry, established in 1954, is a nationwide twin registry covering twin births across more than a century of Danish records. The registry links to other Danish national registers and supports research into the genetic and environmental determinants of health.

Category

Open dataset

Access

Credentialed

Region

Nordic — Denmark

Coverage

Denmark, all twins born since 1875, approximately 175,000 twins

Data types

twin records, zygosity, birth data, family linkages

twin studies genetics family studies epidemiology

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Record HDB-0446 · last verified 2026-08-23 · listed in Open datasets

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