Liu, Yang
Zang, Boying
Shao, Jinang
Ning, Ning
He, Lixia
Ma, Yanan
Funding for this research was provided by:
Key Laboratory of Intelligent Preventive Medicine of Zhejiang Province (2-4-2020E10004)
Article History
Received: 21 October 2022
Accepted: 24 April 2023
First Online: 4 July 2023
Declarations
:
: The study procedures were consistent with the Declaration of Helsinki. Written informed consent was collected in the National School of Development of Peking University on the China Health and Retirement Longitudinal Study (CHARLS). The study protocol was approved by the Ethical Review Committee of Peking University (approval number: IRB 00001052–11015) and each participant provided written informed consent. If participants involved in the study were illiterate, the interviewer would carefully deliver an oral explanation to them. They can sign the informed consent with their fingerprint if they failed to write their name because of the shortage of education. The original informed consent and ethical procedure about the CHARLS have been detailed at ExternalRef removed.
: Not applicable.
: The authors declare that they have no conflict of interest.