title: The effect of changing from one to two views at incident (subsequent) screens in the NHS breast screening programme in England: impact on cancer detection and recall rates.
abstract: OBJECTIVE
  To assess the effect on cancer detection and recall rates of changing from one to two views for incident (subsequent) screens.
  
  
  METHODS
  Controlled, comparative, observational study of programmes in NHS breast screening programme in England.
  
  
  METHODS
  women aged 50-64 years were screened by the NHSBSP between 1 April 2001 and 31 March 2003.
  
  
  RESULTS
  The effect of changing to two-view mammography was a 20% increase in overall incident screen cancer detection rate, with the biggest effect seen for small (<15 mm) invasive cancers. This increased detection rate was achieved with an 11% drop-in recall rate.
  
  
  CONCLUSIONS
  The introduction of two-view mammography for incident screens has resulted in considerable improvements in overall NHS breast screening performance.
authors.affiliation: Cancer Screening Evaluation Unit, Institute of Cancer Research, Sutton, UK. roger.blanks@icr.ac.uk
authors.forename: R G
authors.initials: RG
authors.lastname: Blanks
authors.forename: R L
authors.initials: RL
authors.lastname: Bennett
authors.forename: J
authors.initials: J
authors.lastname: Patnick
authors.forename: S
authors.initials: S
authors.lastname: Cush
authors.forename: C
authors.initials: C
authors.lastname: Davison
authors.forename: S M
authors.initials: SM
authors.lastname: Moss
mesh_terms: D000368:Aged; D001943:Breast Neoplasms / Q000000981:diagnostic imaging*; D002278:Carcinoma in Situ / Q000000981:diagnostic imaging*; D018270:Carcinoma, Ductal, Breast / Q000000981:diagnostic imaging*; D016022:Case-Control Studies; D004739:England; D005260:Female; D006801:Humans; D008327:Mammography / Q000295:instrumentation / Q000379:methods*; D008875:Middle Aged; D010342:Patient Acceptance of Health Care; D012017:Referral and Consultation; D012189:Retrospective Studies; D012680:Sensitivity and Specificity