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Mirko Petrovic was not involved in the selection of peer reviewers for the manuscript nor any of the subsequent editorial decisions. Marie Carrein, Johan Van der Heyden, Els Mehuys and Koen Boussery have no conflicts of interest that are directly relevant to the content of this article.","order":2,"name":"Ethics","group":{"name":"EthicsHeading","label":"Conflict of interest"}},{"value":"This study was based on a retrospective analysis of HISLink 2018, a pseudonymised database containing data from the national Health Interview Survey 2018, linked to data from the Belgian Compulsory Health Insurance. The Health Interview Survey 2018 was organised in accordance with the Belgian privacy legislation and has been approved by the Ethics Committee of Ghent University Hospital (advice EC UZG 2017\/1454 on 21 December, 2017). Participation in the Health Interview Survey was voluntary and no written informed consent was required. Potential participants received a letter and information leaflet describing the survey and its procedures. Participation was considered equivalent to giving consent. The Ethics Committee of Ghent University Hospital waived the need for formal written informed consent. The Belgian Information Security Committee (Deliberation No. 20\/204 on 3 November, 2020) authorised the data linkage in HISLink 2018. All methods were conducted in accordance with the Declarations of Helsinki.","order":3,"name":"Ethics","group":{"name":"EthicsHeading","label":"Ethics approval"}},{"value":"Not applicable.","order":4,"name":"Ethics","group":{"name":"EthicsHeading","label":"Consent to participate"}},{"value":"Not applicable.","order":5,"name":"Ethics","group":{"name":"EthicsHeading","label":"Consent for publication"}},{"value":"Data supporting this study are not publicly available to preserve individuals\u2019 privacy under the European General Data Protection Regulation. Access to these data was granted under license from the InterMutualistic Agency and Sciensano. Therefore, data are available from the authors upon reasonable request and subject to approval from both institutions.","order":6,"name":"Ethics","group":{"name":"EthicsHeading","label":"Availability of data and material"}},{"value":"The protocol and analytic code are available upon reasonable request.","order":7,"name":"Ethics","group":{"name":"EthicsHeading","label":"Code availability"}},{"value":"All authors contributed to the study conception and design. MC performed the data preparation and analysis. Data interpretation was performed by MC, JVdH, EM, and KB. The first draft of the manuscript was written by MC and all authors commented on previous versions of the manuscript. All authors have read and approved the final version of the manuscript.","order":8,"name":"Ethics","group":{"name":"EthicsHeading","label":"Author contributions"}}]}}