Funding for this research was provided by:
Received: 7 September 2020
Accepted: 9 May 2021
First Online: 2 June 2021
: The study protocol was approved by Northern Ireland Department of Health. All participants provided informed consent [CitationRef removed]. Data analyses presented in this paper were solely a secondary analysis of publicly available HSNI data. Administrative permission was necessary to access and use these HSNI data. Administrators of HSNI granted this access, provided the data file, and approved their use to the first author, JS.
: Not applicable.
: The authors declare that they have no competing interests.