Funding for this research was provided by:
Temple Street Foundation, Dublin, Ireland (RPAC17.06)
Received: 31 March 2020
Accepted: 5 October 2020
First Online: 4 November 2020
Ethics approval and consent to participate
: This study was done as part of clinical audit and usual practice [CitationRef removed]. Permission for this project was obtained as a health researcher in adherence with the Statistics Act, 1993 which allows access to more detailed vital statistics to those engaged in medical or social research. The researcher signs a Declaration of Secrecy and is given Officer of Statistics status meeting the requirements for access to the metadata. In order to gain access to the National Quality Assurance Improvement System (NQAIS) Clinical our clinical research proposal for this study was submitted and a user agreement in accordance with NQAIS Information Governance Policy was signed.
: Not applicable.
: The authors declare that they have no conflicting interests. “Results are based on analysis of strictly controlled Research Microdata Files provided by the Central Statistics Office (CSO). The CSO does not take any responsibility for the views expressed or the outputs generated from this research.”