Since the start of the study in 2001, four waves of measurements have taken place in the population cohort and three waves in the clinical cohort. In the first three waves consisted of data from multiple informants (participants, parents, teachers, brothers/sisters).

With the enormous amount of data we’ve collected, TRAILS researches have published hundreds of scientific articles. These publications are available on the website. An overview of all the publications all together can be found in overview of publications. In the database we’ve put together a specification of the domains and instruments of the study.

If you’re interested in general outcomes and results of TRAILS, in News & Media you will be able to find several press releases.