title: Responses to Overdiagnosis in Thyroid Cancer Screening among Korean Women.
abstract: OBJECTIVE
  Communicating the harms and benefits of thyroid screening is necessary to help individuals decide on whether or not to undergo thyroid cancer screening. This study was conducted to assess changes in thyroid cancer screening intention in response to receiving information about overdiagnosis and to determine factors with the greatest influence thereon.
  
  
  METHODS
  Data were acquired from subjects included in the 2013 Korean National Cancer Screening Survey (KNCSS), a nationwide, population-based, cross-sectional survey. Of the 4,100 respondents in the 2013 KNCSS, women were randomly subsampled and an additional face-to-face interview was conducted. Finally, a total of 586 female subjects were included in this study. Intention to undergo thyroid cancer screening was assessed before and after receiving information on overdiagnosis.
  
  
  RESULTS
  Prior awareness of overdiagnosis in thyroid cancer screening was 27.8%. The majority of subjects intended to undergo thyroid cancer screening before and after receiving information on overdiagnosis (87% and 74%, respectively). Only a small number of subjects changed their intention to undergo thyroid cancer screening from positive to negative after receiving information on overdiagnosis. Women of higher education level and Medical Aid Program recipients reported being significantly more likely to change their intention to undergo thyroid cancer screening afterreceiving information on overdiagnosis,whilewomen with stronger beliefs on the efficacy of cancer screening were less likely to change their intention.
  
  
  CONCLUSIONS
  Women in Korea appeared to be less concerned about overdiagnosis when deciding whether or not to undergo thyroid cancer screening.
authors.affiliation: Graduate School of Cancer Science and Policy, Goyang, Korea.
authors.forename: Sangeun
authors.initials: S
authors.lastname: Lee
authors.affiliation: National Cancer Control Institute, National Cancer Center, Goyang, Korea.
authors.forename: Yoon Young
authors.initials: YY
authors.lastname: Lee
authors.affiliation: National Cancer Control Institute, National Cancer Center, Goyang, Korea.
authors.forename: Hyo Joong
authors.initials: HJ
authors.lastname: Yoon
authors.affiliation: Graduate School of Cancer Science and Policy, Goyang, Korea.
authors.forename: Eunji
authors.initials: E
authors.lastname: Choi
authors.affiliation: National Cancer Control Institute, National Cancer Center, Goyang, Korea.
authors.forename: Mina
authors.initials: M
authors.lastname: Suh
authors.affiliation: National Cancer Control Institute, National Cancer Center, Goyang, Korea.
authors.forename: Boyoung
authors.initials: B
authors.lastname: Park
authors.affiliation: Graduate School of Cancer Science and Policy, Goyang, Korea.|National Cancer Control Institute, National Cancer Center, Goyang, Korea.
authors.forename: Jae Kwan
authors.initials: JK
authors.lastname: Jun
authors.affiliation: National Cancer Control Institute, National Cancer Center, Goyang, Korea.
authors.forename: Yeol
authors.initials: Y
authors.lastname: Kim
authors.affiliation: Graduate School of Cancer Science and Policy, Goyang, Korea.|National Cancer Control Institute, National Cancer Center, Goyang, Korea.
authors.forename: Kui Son
authors.initials: KS
authors.lastname: Choi
mesh_terms: D000328:Adult; D000368:Aged; D054626:Consumer Health Information; D003430:Cross-Sectional Studies; D003657:Decision Making; D055088:Early Detection of Cancer / Q000009:adverse effects*; D005260:Female; D058015:Health Communication; D007722:Health Knowledge, Attitudes, Practice; D006801:Humans; D033182:Intention; D008403:Mass Screening / Q000009:adverse effects*; D000069342:Medical Overuse; D008875:Middle Aged; D011897:Random Allocation; D056910:Republic of Korea; D013964:Thyroid Neoplasms / Q000175:diagnosis*
keywords: Early detection of cancer; Intention; Medical overuse; Thyroid neoplasms