About Project SEXUS

Project SEXUS aims to shed light on the sexual attitudes, preferences, experiences, and behaviors of the Danish population and to provide novel knowledge about the interplay between sexuality, lifestyle, and health.  

The Project SEXUS Report and Questionnaire are available below

Project SEXUS sums up the main results in a project report, which was released just after midnight on Monday 28th October 2019.

Project SEXUS is an individual-based, prospective cohort study among a random sample of 15 to 89-year-old Danes. The project's questionnaire consisted of more than 600 items covering a broad range of sexual health and quality-of-life issues such as sexual identity, orientation, preferences, experiences, current behavior, problems, dysfunctions and attitudes. Due to several filter questions, the average respondent answered approximately 180 questions.

Data collection took place from September 2017 to August 2018. Most results presented in the project report are based on the answers given by a total of 62,675 respondents included in the main sample.

The report is in Danish, but it contains a summary of key findings in English. 

Furthermore, Project SEXUS...

  • invited approximately 200,000 Danes aged 15-89 years to participate. Respondents were randomly selected from the Danish population.
  • collects data using a digital questionnaire with a broad range of items on health, lifestyle, and sexuality. The average completion time for the questionnaire was around 30 minutes.
  • is a prospective cohort study where participants will be re-invited regularly.
  • is the first longitudinal cohort study in the world with a firm focus on sexual health.
  • constitutes a research collaboration between Statens Serum Institut (Department of Epidemiological Research) and Aalborg University (Center for Sexology Research)
  • has received funding from the Obel Family Foundation, the Augustinus Foundation, the Health Foundation (Helsefonden), and the A.P. Møller Foundation.


     Logo Det Obelske familiefond

    Logo Augustinusfonden

     Logo helsefonden 

     Logo A.P. Møller Fonden 250 x 36

Morten Frisch


Morten Frisch, Overlæge, Epidemiologisk Forskning / Projekt SEXUS
T. 32683160 @. mfr@ssi.dk Se profil