No abstract available
Keywords:
NHANES; cross-sectional study; insights; methods; sleep.
Grants and funding
The author(s) declare financial support was received for the research, authorship, and/or publication of this article. This study was supported by the National Social Science Fund of China (Grant number BIA190201, general program of pedagogy: research on the financing and investment management of China’s “Double First-Class” universities under the new normal) and “Cross-discipline supporting program” from the School of Social Science, Tsinghua University.