Department of Nursing, Sahmyook University, Seoul, Korea.
© 2016 Korean Society of Nursing Science
This is an Open Access article distributed under the terms of the Creative Commons Attribution NoDerivs License. (http://creativecommons.org/licenses/by-nd/4.0/) If the original work is properly cited and retained without any modification or reproduction, it can be used and re-distributed in any format and medium.
This research was supported by Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education (2014R1A1A2053517)
The authors declared no conflict of interest.
ECOG=Eastern cooperative oncology group.
SE=Standard error; CR=Critical ratio; SMC=Squared multiple correlations.
ECOG=Eastern cooperative oncology group.
SE=Standard error; CR=Critical ratio; SMC=Squared multiple correlations.