Funding for this research was provided by:
Postdoctoral Research Foundation of China (Grant No.2019M660344)
Changjiang Scholar Program of Chinese Ministry of Education (N/A)
Received: 8 January 2020
Accepted: 28 May 2020
First Online: 12 June 2020
Written ethics approval and consent to participate
: The survey was conducted in all provinces by the Leading Group of the National Sample Survey on Disability and the National Bureau of Statistics. It was approved by the China State Council (No. 20051104) and was implemented within the legal framework governed by the Statistical Law of the People’s Republic of China. All survey respondents provided consent to the Chinese government.
: Not applicable as we do not provide personal information for publication.
: The authors declare no potential conflicts of interest with respect to the authorship and/or publication of this article.