title: Breast self-examination: self-reported frequency, quality, and associated outcomes.
abstract: BACKGROUND
  There is little information on the quality of breast self-examination (BSE) and associated outcomes.
  
  
  METHODS
  We conducted a retrospective cohort study of 27,421 women enrolled in a Pacific Northwest health plan. We linked responses regarding BSE quality from a questionnaire to subsequent screening and diagnostic efforts.
  
  
  RESULTS
  A total of 75% of the women performed BSE. We rated BSE quality as adequate in 27%. Women who reported higher BSE duration, frequency, and quality were more likely to have diagnostic mammograms. Participants ultimately diagnosed with breast cancer (N = 300) were significantly less likely to report performing BSE. Tumor size and stage were not associated with BSE behavior.
  
  
  CONCLUSIONS
  A high proportion of women perform BSE, but few do so adequately. We found no evidence for benefit of BSE. It is time to ask whether systematic BSE performance should continue to be encouraged.
authors: Department of Medicine, University of Washington, Seattle, USA. shinping@u.washington.edu
authors: Shin-Ping
authors: SP
authors: Tu
authors: Lisa M
authors: LM
authors: Reisch
authors: Stephen H
authors: SH
authors: Taplin
authors: William
authors: W
authors: Kreuter
authors: Joann G
authors: JG
authors: Elmore
mesh_terms: D000328:Adult; D000368:Aged; D001943:Breast Neoplasms / Q000175:diagnosis* / Q000473:pathology / Q000517:prevention & control; D016504:Breast Self-Examination; D005189:False Positive Reactions; D005260:Female; D005500:Follow-Up Studies; D015438:Health Behavior; D007722:Health Knowledge, Attitudes, Practice; D006801:Humans; D008327:Mammography; D008403:Mass Screening; D008875:Middle Aged; D009367:Neoplasm Staging; D012189:Retrospective Studies; D012307:Risk Factors; D012650:Self Disclosure; D011795:Surveys and Questionnaires; D014861:Washington