Funding for this research was provided by:
Mo-Im Kim Nursing Research Institute and College of Nursing, Yonsei University (6-2017-0114)
Article History
Received: 22 March 2020
Accepted: 12 July 2020
First Online: 20 July 2020
Ethics approval and consent to participate
: The sixth wave of the KNHANES was approved by the Institutional Review Board (IRB) of the Korea Centers for Disease Control and Prevention (2013-07CON-03-4C and 2013-12EXP-03-5C). All study participants voluntarily participated and provided a signed written consent within the primary study. All data were strictly anonymous and confidential. This study was approved by the IRB of Yonsei University prior to this secondary data analysis (Y-2017-0020). We conducted this study after downloading the dataset from its web page that KNHANES provides to public (ExternalRef removed).
: Not applicable.
: The authors declare that they have no competing interests.