Ng, Kwok http://orcid.org/0000-0002-5461-7706
Hämylä, Riikka
Tynjälä, Jorma
Villberg, Jari
Tammelin, Tuija
Kannas, Lasse
Kokko, Sami
Funding for this research was provided by:
Sosiaali- ja Terveysministeriö (tbc)
Article History
Received: 7 June 2018
Accepted: 1 February 2019
First Online: 25 February 2019
Authors information
: Not applicable
: The Finnish HBSC study was approved by the Finnish National Board of Education (now known as the Finnish National Agency for Education) and the Trade Union of Education in Finland at the beginning of the survey in 1984. The way the data has been collected since 1984 has not changed. The FSPA study was approved by the University of Jyväskylä Ethical Committee. Surveys that were conducted during school time and were approved by school principals, who organised parental or guardian passive consent. Participation was voluntary and pupils had the right to withdraw from the survey as well as skip certain questions they did not want to answer.
: Not applicable
: The authors declare that they have no competing interests.
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