I have received answers on a number of questions regarding the STOP project. I will translated it to English and put it in the form of questions and answers (q & a). Expect to see a couple of edits here as I go through the text.
Q: When was the STOP project started?
A: It was started in 2015. Registration was open since August 2015.
Q: For how long will this project go on?
A: There is no planned end date for the project.
There are many questions about tinnitus that are still unanswered within several areas, including diagnostics, treatment and genetic risk factors. We hope that STOP will help answer as many questions as possible over a long time.
Q: For how long will the registration be open?
A: Since there is no planned end date for the project, the registration will be kept open indefinitely.
In order to get a good overview it's essential that we have as many participants as possible. At the same time, we need many participants in order to be able to study very specific type of tinnitus. This is necessary because tinnitus can take on different forms for different individuals.
Take a group of 1000 individuals with tinnitus for example. In order to do a relevant study it might be necessary to only look closely at men in their 50s with unilateral tinnitus that resulted from a noise damage. These will then need to be matched by gender, age, hearing status and other factors such as stress level against a control group without tinnitus.
With all these criteria, the number of participants that are included in a specific study is reduced rather quickly. It is for this reason that we need a large number of participants to begin with.
The fact that tinnitus can take on many different forms for different individuals has been one of the key factors that has hampered tinnitus research till this day. This makes it very difficult to do well controlled studies.
Q: When do you plan on collecting data of individuals that have applied for the project thus far?
A: We are collecting data more or less continuously, in the form of questionnaires and hearing tests.
Each participant in the project will answer a questionnaire within a month after applying for the study. Unfortunately, not all participants will be invited to do a hearing test right away. But we hope that those individuals will be invited within 2 - 3 months after answering the questionnaire.
In 2016, we have done about 200 hearing tests on individuals that have applied for the study. In 2017, we plan on doing about 500 - 600 hearing tests. We aim to build a well controlled database that we can use to answer specific research questions.
Q: When can we expect to see the first results?
A: The first results derived directly from the STOP study have been published recently in Frontiers where we have validated a number of questionnaires that were used in the STOP project.
Validation of Online Versions of Tinnitus Questionnaires Translated into Swedish:
http://journal.frontiersin.org/article/10.3389/fnagi.2016.00272/full
Those of us working with the project have also contributed to the cooperative research network TINNET which has led to different research publications.
Systematic review of outcome domains and instruments used in clinical trials of tinnitus treatments in adults:
https://trialsjournal.biomedcentral.com/articles/10.1186/s13063-016-1399-9
Genetics of Tinnitus: An Emerging Area for Molecular Diagnosis and Drug Development:
http://journal.frontiersin.org/article/10.3389/fnins.2016.00377/full