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National Patient Register


Primary variables


Birth data

Cancelled procedure



Municipality of residence

Operation - data

Outpatient visit

Treating hospital /department



The National Patient Register (LPR) contains information about the times a person has been in contact with the Danish hospital service as part of fx examinations or treatment which is all collated as data in the National Patient Register (LPR) administered by the Danish Health Data Authority. This may for example describe when and where patients were admitted or describe patients' diagnoses, examinations, treatments, operations, etc.

LPR was established in 1976 and contains information going back to 1977 on hospitalised patients. The register has been constantly expanded and now also includes data on outpatients, accident and emergency patients and data on patients at mental hospitals going back to 1995.

More details


Collection Period

Collection Period
The population includes all patients treated at public and private somatic psychiatric hospitals in Denmark
Database Categories

Application requirements

Scientific Services at The Danish Health Data Authority

Scientific Services (Danish: Forskerservice) at The Danish Health Data Authority is a Joint port of access to pseudo anonymized data that the Danish Health Data Authority are responsible for. Scientific Services works to support health research in Denmark, by providing access to, as well as advising on use of the National Danish health data.

Via Scientific Service researchers can obtain access to these data, either in a safe environment on the Research Mashine (Danish: Forskermaskinen) or by ordering data extractions that are delivered directly to the researcher.

To apply for access to data, a list of requirements must be obtained. A Project description and an extension description must be attached, containing information about which registries, variables, population and period that are applied for. Furthermore, the Danish Data Protection Agency (Danish: Datatilsynet) must approve the research project, and the approval should be attached to the application. If the research project includes direct contact with humans or human biological material, The National Committee on Health Research Ethics must also approve the project.

Application process

  • Use Scientific Services (Danish: Forskerservice) as application portal
  • Initial case processing
  • Preliminary approval of the permissions
  • Bidding
  • Acceptance of data access
  • Programming
  • Data access via the Research Machine (Danish: Forskermaskinen)



As a public authority and data processor The Danish Health Data Authority are subject to Danish laws for treatment of personal data, that should secure that the Danish health data are treated right. These legislations include The Act on Processing of Personal Data (Danish: Persondataloven) and The Danish Act of Health (Danish: Sundhedloven).

Contact information

Data owner
Danish Health Data Authority
Contact data owner
Ørestads Boulevard 5
2300 København S
Website - data owner
Data administrator
Danish Health Data Authority
Contact data administrator
Kristian Holt Nielsen
T: 32 68 51 35
Website - data administrator