Article History
Received: 19 May 2025
Accepted: 20 December 2025
First Online: 12 February 2026
Declarations
:
: The authors declare that they have no conflict of interest.
: Written informed consent was obtained from all NDNS participants [ ]. The NDNS was conducted according to the guidelines laid down in the Declaration of Helsinki, and all procedures were granted ethical approval by the Cambridge South NRES Committee (reference no. 13/EE/0016). For ease of reference, all NDNS datasets can be accessed online through the UK Data Service: ( ). Since this study is a secondary analysis of the NDNS data, additional ethical approval was not required.