title: Trends in Percutaneous Coronary Intervention and Coronary Artery Bypass Surgery in Korea.
abstract: BACKGROUND
  Coronary angioplasty has been replacing coronary artery bypass grafting (CABG) because of the relative advantage in terms of recovery time and noninvasiveness of the procedure. Compared to other Organization for Economic Cooperation and Development (OECD) countries, Korea has experienced a rapid increase in coronary angioplasty volumes.
  
  
  METHODS
  We analyzed changes in procedure volumes of CABG and of percutaneous coronary intervention (PCI) from three sources: the OECD Health Data, the National Health Insurance Service (NHIS) surgery statistics, and the National Health Insurance claims data.
  
  
  RESULTS
  We found the ratio of procedure volume of PCI to that of CABG per 100,000 population was 19.12 in 2014, which was more than triple the OECD average of 5.92 for the same year. According to data from NHIS statistics, this ratio was an increase from 11.4 to 19.3 between 2006 and 2013.
  
  
  CONCLUSIONS
  We found that Korea has a higher ratio of total procedure volumes of PCI with respect to CABG and also a more rapid increase of volumes of PCI than other countries. Prospective studies are required to determine whether this increase in absolute volumes of PCI is a natural response to a real medical need or representative of medical overuse.
authors.affiliation: Center for Preventive Medicine and Public Health, Seoul National University Bundang Hospital.
authors.forename: Heeyoung
authors.initials: H
authors.lastname: Lee
authors.affiliation: Department of Preventive Medicine, Konkuk University School of Medicine.
authors.forename: Kun Sei
authors.initials: KS
authors.lastname: Lee
authors.affiliation: Department of Thoracic and Cardiovascular Surgery, The Catholic University of Korea College of Medicine.
authors.forename: Sung Bo
authors.initials: SB
authors.lastname: Sim
authors.affiliation: Department of Preventive Medicine, Konkuk University School of Medicine.
authors.forename: Hyo Seon
authors.initials: HS
authors.lastname: Jeong
authors.affiliation: Department of Preventive Medicine, Konkuk University School of Medicine.
authors.forename: Hye Mi
authors.initials: HM
authors.lastname: Ahn
authors.affiliation: Department of Thoracic and Cardiovascular Surgery, Konkuk University Medical Center, Konkuk University School of Medicine.
authors.forename: Hyun Keun
authors.initials: HK
authors.lastname: Chee
keywords: Administrative claims, healthcare; Coronary angiography; Coronary artery bypass; Myocardial infarction; Quality of healthcare