Li, Xinyuan
Mao, Yafei
Zhu, Shumin
Ma, Jin
Gao, Shichao
Jin, Xiuyu
Wei, Zishuan
Geng, Yulan
Article History
Received: 14 October 2022
Accepted: 9 January 2023
First Online: 18 January 2023
Declarations
:
: The survey protocol was approved by the Research Ethics Review Board of the National Center for Health Statistics ( ). The NCHS Research Ethics Review Board reviewed and approved NHANES, and all survey participants provided written informed consent. Therefore, no further ethical approval and informed consent were required.
: Since all NHANES data were de-identified, the study did not require the approval of the institutional board review committee or the informed consent of participants.
: The authors declare that they have no conflict of interest.