Funding for this research was provided by:
Kulttuurin ja Yhteiskunnan Tutkimuksen Toimikunta (294228)
Article History
Received: 3 October 2017
Accepted: 4 June 2018
First Online: 20 June 2018
Ethics approval and consent to participate
: The manuscript reports students’ questionnaire data combined with the school register data. In our interpretation of the instructions of the University of Helsinki Ethics Review Board in the Humanities and Social and Behavioural Sciences, this kind of research does not need ethical pre-examination. Therefore, we have not subjected the research to the pre-examination of the University of Helsinki Ethics Review Board in the Humanities and Social and Behavioral Sciences. Prior to study, students were informed about the research and stated that participation is voluntary. Permission to research was received by the school principal.
: The authors declare that they have no competing interests.
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