title: Reduction in interval cancer rates following the introduction of two-view mammography in the UK breast screening programme.
abstract: BACKGROUND
  The introduction of two-view mammography at incident (subsequent) screens in the National Health Service Breast Screening Programme (NHSBSP) has led to an increased number of cancers detected at screen. However, the effect of two-view mammography on interval cancer rates has yet to be assessed.
  
  
  METHODS
  Routine screening and interval cancer data were collated from all screening programmes in the United Kingdom for women aged 50-64, screened between 1 April 2003 and 31 March 2005. Interval cancer rates were compared based on whether two-view mammography was in use at the last routine screen.
  
  
  RESULTS
  The reduction in interval cancers following screening using two-view mammography compared with one view was 0.68 per 1,000 women screened. Overall, this suggests the introduction of two-view mammography at incident screen was accompanied by a 15-20% reduction in interval cancer rates in the NHSBSP.
  
  
  CONCLUSIONS
  The introduction of two-view mammography at incident screens is associated with a reduction in incidence of interval cancers. This is consistent with previous publications on a contemporaneous increase in screen-detected cancers. The results provide further evidence of the benefit of the use of two-view mammography at incident screens.
authors.affiliation: Policy Research Unit in Cancer Awareness, Screening and Early Diagnosis, Queen Mary, University of London, Wolfson Institute of Preventive Medicine, Charterhouse Square, London EC1M 6BQ, UK.
authors.forename: A
authors.initials: A
authors.lastname: Dibden
authors.affiliation: Policy Research Unit in Cancer Awareness, Screening and Early Diagnosis, Queen Mary, University of London, Wolfson Institute of Preventive Medicine, Charterhouse Square, London EC1M 6BQ, UK.
authors.forename: J
authors.initials: J
authors.lastname: Offman
authors.affiliation: Policy Research Unit in Cancer Awareness, Screening and Early Diagnosis, Queen Mary, University of London, Wolfson Institute of Preventive Medicine, Charterhouse Square, London EC1M 6BQ, UK.
authors.forename: D
authors.initials: D
authors.lastname: Parmar
authors.affiliation: East Midlands Quality Assurance Reference Centre (QARC), Nottingham University Hospital City Campus, Hucknall Road, Nottingham NG5 1PB, UK.
authors.forename: J
authors.initials: J
authors.lastname: Jenkins
authors.affiliation: East of England QARC, 2nd Floor, Compass House, Chivers Way, Vision Park, Histon, Cambridge CB24 9AD, UK.
authors.forename: J
authors.initials: J
authors.lastname: Slater
authors.affiliation: London QARC, 1st Floor, 51/53 Bartholomew Close, London EC1A 7BE, UK.
authors.forename: K
authors.initials: K
authors.lastname: Binysh
authors.affiliation: Northern Ireland QARC, 18 Ormeau Avenue, Belfast BT2 8HS, UK.
authors.forename: J
authors.initials: J
authors.lastname: McSorley
authors.affiliation: North East, Yorkshire and the Humber QARC, Waterfront 4, Goldcrest Way, Newburn Riverside Newcastle upon Tyne, NE15 8NY, UK.
authors.forename: S
authors.initials: S
authors.lastname: Scorfield
authors.affiliation: North West QARC, Hollinwood Business Centre, Albert Street, Oldham OL8 3QL, UK.
authors.forename: P
authors.initials: P
authors.lastname: Cumming
authors.affiliation: South Central QARC, 4150 Chancellor Court, Oxford Business Park South, Oxford OX4 2GX, UK.
authors.forename: X-H
authors.initials: XH
authors.lastname: Liao
authors.affiliation: South East Coast QARC, 77a High Street, Battle, East Sussex TN33 0AG, UK.
authors.forename: M
authors.initials: M
authors.lastname: Ryan
authors.affiliation: South West QARC, 1st Floor, Grosvenor House, 149 Whiteladies Road, Clifton, Bristol BS8 2RA, UK.
authors.forename: D
authors.initials: D
authors.lastname: Harker
authors.affiliation: Public Health Wales, 18 Cathedral Road, Cardiff CF11 9LJ, UK.
authors.forename: G
authors.initials: G
authors.lastname: Stevens
authors.affiliation: West Midlands Breast Screening QARC, Public Health Building, University of Birmingham, Birmingham B15 2TT, UK.
authors.forename: N
authors.initials: N
authors.lastname: Rogers
authors.affiliation: Cancer Epidemiology Unit, University of Oxford, Richard Doll Building, Roosevelt Drive, Oxford OX3 7LF, UK.
authors.forename: R
authors.initials: R
authors.lastname: Blanks
authors.affiliation: NHS Cancer Screening Programmes, Fulwood House, Old Fulwood Road, Sheffield S10 3TH, UK.
authors.forename: S
authors.initials: S
authors.lastname: Sellars
authors.affiliation: NHS Cancer Screening Programmes, Fulwood House, Old Fulwood Road, Sheffield S10 3TH, UK.
authors.forename: J
authors.initials: J
authors.lastname: Patnick
authors.affiliation: Policy Research Unit in Cancer Awareness, Screening and Early Diagnosis, Queen Mary, University of London, Wolfson Institute of Preventive Medicine, Charterhouse Square, London EC1M 6BQ, UK.
authors.forename: S W
authors.initials: SW
authors.lastname: Duffy
mesh_terms: D001943:Breast Neoplasms / Q000175:diagnosis* / Q000000981:diagnostic imaging / Q000517:prevention & control; D055088:Early Detection of Cancer; D005260:Female; D006801:Humans; D008327:Mammography; D008403:Mass Screening; D008875:Middle Aged; D009313:National Health Programs; D006113:United Kingdom