Rinne, Hanna
Laaksonen, Mikko
Blomgren, Jenni
Article History
Received: 26 August 2021
Accepted: 15 April 2022
First Online: 3 May 2022
Declarations
:
: The study used secondary data retrieved from registers, and no human subjects were contacted to collect the data. According to the General Data Protection Regulation of the EU (GDPR) [CitationRef removed] and the Finnish Data Protection Act [CitationRef removed], processing of personal data is permitted without informed consent for a task carried out in the public interest, such as scientific research. In Finland, an ethical review statement is not required for studies based solely on administrative register data [CitationRef removed]. We followed good scientific practice, data protection guidelines and ethical standards [CitationRef removed] in collecting and analyzing the data and in reporting the results. Permissions for the data have been obtained from the City of Oulu, the Social Insurance Institution of Finland, the National Institute for Health and Welfare, the Finnish Center for Pensions, Statistics Finland and the Finnish Tax Administration. The data were pseudonymised by the data providers, and the researchers had no access to the personal identifiers of the study subjects. Different data sets were linked through a pseudo-identifier that had been constructed for each individual.
: Not applicable.
: The authors declare that they have no competing interests.