Funding for this research was provided by:
Universitetet i Tromsø (N/A)
Norwegian Institute of Public Health (N/A)
Norwegian Ministry of Health and Social Affairs (N/A)
Received: 21 May 2020
Accepted: 28 October 2020
First Online: 12 November 2020
Ethics approval and consent to participate
: This research complies with the Declaration of Helsinki. The Know Your Heart study was approved by the ethical committees of the London School of Hygiene & Tropical Medicine (approval number 8808 received 24.02.2015), Novosibirsk State Medical University (approval number 75 approval received 21/05/2015), the Institute of Preventative Medicine, Novosibirsk (no approval number; approval received 26/12/2014), and the Northern State Medical University, Arkhangelsk (approval number 01/01–15 received 27/01/2015). Ethical committees in each location subsequently approved use of the study data for secondary data analyses. All participants provided oral consent before completing the baseline questionnaire of the study and written consent after completing the questionnaire for this data to be used for the purposes of the study. Informed written consent to participate in the study was obtained from all participants before completion of the health check examination.
: Not applicable.
: The authors declare they have no competing interests.