Funding for this research was provided by:
Suzhou Municipal Science and Technology Bureau (SS2019069)
Text and Data Mining valid from 2019-12-01
Received: 8 May 2019
Accepted: 17 December 2019
First Online: 30 December 2019
Ethics approval and consent to participate
: The CHARLS was approved by the Ethical Review Committee at the Peking University. Written informed consent was obtained from each participant prior to initiating any study procedures.
: Not applicable.
: Dr. Chenkai Wu provides paid consultant services to HealthKeeperS, a start-up health data analytics company in China. Other authors have no conflict of interests to disclose.