Yi, Yanling
Xin, Jing
Liu, Junxia
Wu, Jing
Funding for this research was provided by:
The National Social Science Fund of China (NO.16BSH046)
Article History
Received: 29 November 2022
Accepted: 23 September 2023
First Online: 19 October 2023
Declarations
:
: Ethical approval for all the CHARLS waves was granted from the Institutional Review Board at Peking University. The IRB approval numbers are IRB00001052-11015 and IRB00001052-11014. As the datasets of CHARLS are publicly available, ethical approval was not needed for this study.
: Not applicable.
: The authors declare that they have no competing interests.