Funding for this research was provided by:
PhD research startup foundation of Shanxi Medical University (XD2042)
PhD research startup foundation of Shanxi Province (SD2029)
Program for the Philosophy and Social Sciences Key Research Base of Higher Education Institutions of Shanxi (20210136)
Philosophy and Social Science Program of Shanxi Province (2021YJ087)
Article History
Received: 11 April 2021
Accepted: 25 October 2022
First Online: 16 November 2022
Declarations
:
: The data used in our research is secondary data. The data from CLHLS survey already obtained the ethical approval and informed consent, and was approved by research ethics committees of Duke University and Peking University (IRB00001052–13074). The datasets analyzed during the current study are available online () from Peking University Open Research Data for researchers who meet the criteria for access to these de-identified data.
: Not applicable.
: On behalf of all authors, the corresponding author states that there is no conflict of interest.