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Your personal data is important for research that benefits people and society

Aarhus University conducts research that generates new knowledge for the benefit of society and individuals. Therefore, in some cases, we process personal data for research purposes without informing each individual.


Denmark is one of the most digitized societies in the world. This gives Danish researchers a unique opportunity to gain insights across large datasets. Broad access to coherent data makes it possible to investigate complex questions about health, the environment, and societal conditions. It also enables the development of new knowledge that can improve lives and strengthen collective solutions.

In many research projects, the focus is not on the individual. Instead, it is on the patterns and correlations that emerge when data from many people are analyzed collectively. For example, research may aim to identify trends in the development of diseases, lifestyle, or societal conditions across groups. It does not aim to track individual persons. In this way, research can generate knowledge that benefits the entire population.

When we process personal data in research, it is always done under secure conditions and with respect for individual privacy and rights. Find more information about Aarhus University as data controller for personal data in research

Overview of projects exempt from the duty to inform at Aarhus University

Here, you can find an overview of research projects at Aarhus University where it has been assessed that it would be very difficult to inform each individual whose data is included in the project that their personal data is being used for research. This may be the case because the dataset includes information about a large number of individuals. In such cases, the projects apply the exemption in Article 14(5)(b) of the General Data Protection Regulation. Informing each individual would require a disproportionate effort.

Instead, Aarhus University publishes this overview to provide transparency about the projects where the exemption has been applied.

See the list of projects on this link (in Danish only).

How we process your data

The research projects listed in the overview use your data exclusively for scientific purposes. The legal basis for this processing is as follows:

  • General personal data is processed as part of a task carried out in the public interest, cf. GDPR Article 6(1)(e).
  • Special categories of data, such as health data, are processed for scientific research purposes, cf. GDPR Article 9(2)(j) in conjunction with Section 10(1) of the Danish Data Protection Act.
  • CPR numbers are only processed when necessary for unique identification, cf. Section 11(1) of the Danish Data Protection Act.

At present, it is not possible to say for how long Aarhus University will process your personal data, as this depends on the purpose of the research project and the rules on storage according to responsible research practice. When your personal data is no longer required for processing, it will be ​anonymized, transferred to the Danish National Archives or deleted.​

When assessing how long it is necessary to process your personal data, we take into account, among other things:

  • Achieving the research purpose
  • Disseminating the research results and being able to account for the accuracy of the research findings for a period after the research has been completed (e.g. according to the rules on responsible research practice or according to law).
  • Aarhus University must be able to account for the accuracy of research results for a period after the project has ended.