European Journal of Epidemiology

, Volume 33, Issue 1, pp 27–36 | Cite as

The Danish Medical Birth Register

  • Mette BliddalEmail author
  • Anne Broe
  • Anton Pottegård
  • Jørn Olsen
  • Jens Langhoff-Roos


The Danish Medical Birth Register was established in 1973. It is a key component of the Danish health information system. The register enables monitoring of the health of pregnant women and their offspring, it provides data for quality assessment of the perinatal care in Denmark, and it is used extensively for research. The register underwent major changes in construction and content in 1997, and new variables have been added during the last 20 years. The aim was to provide an updated description of the register focusing on structure, content, and coverage since 1997. The register includes data on all births in Denmark and comprises primarily of data from the Danish National Patient Registry supplemented with forms on home deliveries and stillbirths. It contains information on maternal age provided by the Civil Registration System. Information on pre-pregnancy body mass index and smoking in first trimester is collected in early pregnancy (first antenatal visit). The individual-level data can be linked to other Danish health registers such as the National Patient Registry and the Danish National Prescription Registry. The register informs several other registers/databases such as the Danish Twin Registry and the Danish Fetal Medicine Database. Aggregated data can be publicly accessed on the Danish Health Data Authority web page ( Researchers can obtain access to individual-level pseudo-anonymised data via servers at Statistics Denmark and the Danish Health Data Authority.


Registers Research design Medical record linkage Nationwide birth register 



We would like to acknowledge the Danish Health Data Authority for valuable help during the writing process of this data resource profile.


This research received no specific grant from any funding agency.

Compliance with Ethical Standards

Conflict of interest

The authors declare no conflicts of interest.

Supplementary material

10654_2018_356_MOESM1_ESM.xlsx (24 kb)
Supplementary material 1 (XLSX 24 kb)


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Copyright information

© Springer Science+Business Media B.V., part of Springer Nature 2018

Authors and Affiliations

  1. 1.Odense Patient Data Explorative Network (OPEN), Department of Clinical ResearchUniversity of Southern Denmark and Odense University HospitalOdenseDenmark
  2. 2.Clinical Pharmacology and Pharmacy, Department of Public HealthUniversity of Southern DenmarkOdenseDenmark
  3. 3.Department of Clinical Biochemistry and PharmacologyOdense University HospitalOdenseDenmark
  4. 4.Department of Clinical EpidemiologyAarhus University HospitalAarhus NDenmark
  5. 5.Department of Obstetrics, RigshospitaletUniversity of CopenhagenCopenhagenDenmark

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