“…Independent variables were decided separately at both the organizational level and the individual level, based on an earlier study [ 14 ]. The organizational variables of hospitals that were selected were hospital location, hospital ownership, bed-to-nurse ratio, and standardized monthly income [ 12 , 17 , 21 , 22 ], whereas gender and age were selected to be the individual variables of nurses [ 12 , 22 ]. Sub-variables for hospital location were Seoul, metropolitan cities, and medium-sized and small cities, and the sub-variables for hospital ownership were public sector, educational foundation, medical or other corporation, and for-profit medical institutions.…”