RESEARCH ARTICLE An evaluation on the effe h o

c b 5%, who are covered by medical aid [1]. The benefit coverage for NHIC beneficiaries and medical aid benefi-come and property to reflect actual income. Additionally, NHIC beneficiaries pay a copayment [3]. In case of out-Kwak et al. BMC Health Services Research (2015) 15:170 DOI 10.1186/s12913-015-0836-xrelatively lower copayment [4]. NHIC remuneratedSeoul, South Korea Full list of author information is available at the end of the articleciaries is identical. Korea’s national health insurance is financed by premiums from insured and government subsidies. In 2007, premiums occupied 83.4 % of NHIC revenue and government subsidies occupied 14.1 % [2]. For industrial workers which include government em-ployee, the premium of national health insurance is patient care, copayment ranges from 30 % of clinic visit to 60 % of higher level general hospital. For the inpatient