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Danish Bariatric Surgery Registry


Primary variables

ASA Physical Status Classification System




Department /clinic




First name(s)

Follow-up data

Gastroesophageal reflux


Hip measurement


Joint pain


Moorehead quality of life questionnaire

Obstructive sleep apnoea

Operation - data

Operation - pathway

Operation - place

Operation - procedure

Polycystic ovary syndrome


Waist measurement


Work - status


The Danish Bariatric Surgery Registry (DFR) is a national clinical quality database covering all patients undergoing bariatric surgery, regardless of whether this is for a primary operation or an intervention in a previously operated patient. The same patient may in principle involve multiple interventions.

DFR is aimed at monitoring and improving the quality of bariatric surgery interventions. All patients in the process of having bariatric surgery should be notified to the Bariatric Surgery Registry regardless of where they are hospitalised. Registration starts at the first examination in the first department the patient contacts regardless of wherever they may be operated on later. The patient pathway comprises initial examination, operation and follow-up.

The database has been operating nationally since 1 September, 2010 , and in 2015 it was extended to also cover obesity-related plastic surgery. DFR is cross-batched with the National Patient Register.

More details

Nationwide clinical quality database
Clinical quality

Collection Period

Collection Period
The population consists of all patients who have undergone obesity and/or plastic surgery interventions in Denmark
Database Categories

Application requirements

The Regional Clinical Quality Databases

Data about clinical quality are collected with the purpose of monitoring and raising the quality of patient treatment in the Danish health-care system. These data can, as well as all other public registers, be made accessible for research projects based on systematic protocols and approved according to the relevant legislations.

Applying for access to data from a regional clinical database requires a list of demands to be obtained. A project description should be attached containing a description of the project explaining the rationale, purpose, methods, budget, publication plan etc.

Furthermore, The Danish Data Protection Agency must approve the project.

Application process

  • Apply via research access (Danish: forskeradgang), an online application system
  • Submit the protocol to The Danish Clinical Registries (RKKP)
  • RKKP registers the application
  • The application is forwarded to the relevant clinical database
  • Potential dialog about adjustment to the protocol
  • Approval and extradition of data (expected 6 months after application)



The Regional clinical quality databases subject to rules for treatment of personal data, that should secure high quality of patient treatment in Denmark. These legislations include The Act on Processing of Personal Data (Danish: Persondataloven) and The Danish Act of Health (Danish: Sundhedloven). These legislations ensure that data access is limited to relevant purposes.

Contact information

Data owner
Central Denmark Region
Contact data owner
Regionshuset Viborg
Skottenborg 26
8800 Viborg 
Website - data owner
Data administrator
The Danish Clinical Registries (RKKP)
Contact data administrator
Annette Odby
T: 21 68 75 70
Website - data administrator