Yang, Xue
Xie, Lei
Article History
Received: 4 May 2023
Accepted: 22 March 2024
First Online: 13 April 2024
Declarations
:
: The authors declare no competing interests.
: This study was based on a secondary analysis of an existing dataset with all participant identifiers removed, and the data was publicly available. Informed consent was obtained from all participants before the questionnaire was administered. All methods were carried out in accordance with the relevant guidelines and regulations, and human subject protection is not an issue here. The survey protocol and instruments followed the Helsinki guidelines and were approved by the National Bureau of Statistics of China, a state organization.
: Not applicable.