title: Performance of Screening Mammography: A Report of the Alliance for Breast Cancer Screening in Korea.
abstract: To analyze the diagnostic accuracy and trend in screening mammography in Korea.
  
  
  
  We retrospectively linked the information from hospitals participating in the Alliance of Breast Cancer Screening in Korea (ABCS-K) and the database of the National Cancer Screening Program. We calculated performance indicators, including the recall rate, cancer detection rate (CDR), positive predictive value (PPV), sensitivity, specificity, false-positive rate (FPR), and interval cancer rate (ICR). Changes in the performance indicators were calculated as the annual percent change with 95% confidence interval (CI).
  
  
  
  We enrolled 128756 cases from 10 hospitals from 2005 to 2010. The recall rate was 19.1% with a downward trend over time (-12.1% per year; 95% CI, -15.9 to -8.2). The CDR was 2.69 per 1000 examinations, without a significant trend. The PPV was 1.4% with an upward trend (20.8% per year; 95% CI, 15.2 to 26.7). The sensitivity was 86.5% without a significant trend, whereas the specificity was 81.1% with an upward trend (3.3% per year; 95% CI, 2.1 to 4.5). The FPR was 18.9% with a downward trend (-12.4% per year; 95% CI, -16.2 to -8.4). The ICR was 0.5 per 1000 negative examinations without a significant trend. There were institutional variations in the diagnostic accuracy and trend except for the CDR, sensitivity, and ICR.
  
  
  
  The sensitivity and CDR of screening mammography in the ABCS-K from 2005 to 2010 were compatible with those for Western women. The recall rate, PPV and specificity, however, were suboptimal, although they showed significant improvements over this period. A further analysis is required to explain institutional variations.
authors.affiliation: Department of Radiology, Bucheon Hospital, Soonchunhyang University College of Medicine, Bucheon 14584, Korea.
authors.forename: Eun Hye
authors.initials: EH
authors.lastname: Lee
authors.affiliation: Department of Radiology, Konyang University Hospital, Konyang University College of Medicine, Daejeon 35365, Korea.
authors.forename: Keum Won
authors.initials: KW
authors.lastname: Kim
authors.affiliation: Department of Radiology, Konyang University Hospital, Konyang University College of Medicine, Daejeon 35365, Korea.
authors.forename: Young Joong
authors.initials: YJ
authors.lastname: Kim
authors.affiliation: Department of Radiology, Gangneung Asan Hospital, University of Ulsan College of Medicine, Gangneung 25440, Korea.
authors.forename: Dong-Rock
authors.initials: DR
authors.lastname: Shin
authors.affiliation: Department of Radiology, Busan Paik Hospital, Inje University College of Medicine, Busan 47392, Korea.
authors.forename: Young Mi
authors.initials: YM
authors.lastname: Park
authors.affiliation: Department of Radiology, Chonnam National University Hwasun Hospital, Chonnam National University College of Medicine, Hwasun 58128, Korea.
authors.forename: Hyo Soon
authors.initials: HS
authors.lastname: Lim
authors.affiliation: Department of Radiology, Hanyang University Hospital, Hanyang University College of Medicine, Seoul 04763, Korea.
authors.forename: Jeong Seon
authors.initials: JS
authors.lastname: Park
authors.affiliation: Department of Radiology, Wonkwang University Hospital, Wonkwang University School of Medicine, Iksan 54538, Korea.
authors.forename: Hye-Won
authors.initials: HW
authors.lastname: Kim
authors.affiliation: Department of Radiology, Dankook University Hospital, Dankook University College of Medicine, Cheonan 31116, Korea.
authors.forename: You Me
authors.initials: YM
authors.lastname: Kim
authors.affiliation: Department of Radiology, Kyungpook National University Hospital, Kyungpook National University College of Medicine, Daegu 41944, Korea.
authors.forename: Hye Jung
authors.initials: HJ
authors.lastname: Kim
authors.affiliation: National Cancer Control Institute, National Cancer Center, Goyang 10408, Korea.
authors.forename: Jae Kwan
authors.initials: JK
authors.lastname: Jun
mesh_terms: D000328:Adult; D000368:Aged; D001943:Breast Neoplasms / Q000175:diagnosis*; D016208:Databases, Factual; D055088:Early Detection of Cancer; D005260:Female; D006801:Humans; D008327:Mammography; D008403:Mass Screening; D008875:Middle Aged; D015203:Reproducibility of Results; D056910:Republic of Korea; D012189:Retrospective Studies; D012680:Sensitivity and Specificity
keywords: Breast; Breast neoplasms; Mammography; Mass screening