Wang, Tian
Jiang, Quanbao
Article History
Received: 15 March 2022
Accepted: 15 November 2022
First Online: 24 November 2022
Declarations
:
: This study was based on a secondary analysis of an existing dataset with all participant identifiers removed. Informed consent was obtained from all participants before the questionnaire was administered. All research methods were carried out in accordance with relevant guidelines and regulations, and human subject protection is not an issue here. The survey protocol and instruments followed the Helsinki guidelines and were approved by the Institutional Review Board (IRB) of the National Bureau of Statistics of China, a state organization. These disclaimers also apply to the data from the 2017 China Fertility Survey used here.
: Not applicable.
: The authors declare that they have no competing interests.