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Portrait of Sophia Zackrisson. Photo

Sophia Zackrisson

Research group manager, Principal investigator, Professor, MD

Portrait of Sophia Zackrisson. Photo

Effectiveness of Population-Based Service Screening With Mammography for Women Ages 40 to 49 Years Evaluation of the Swedish Mammography Screening in Young Women (SCRY) Cohort

Author

  • Barbro Numan Hellquist
  • Stephen W. Duffy
  • Shahin Abdsaleh
  • Lena Bjorneld
  • Pal Bordas
  • Laszlo Tabar
  • Bedrich Vitak
  • Sophia Zackrisson
  • Lennarth Nystrom
  • Hakan Jonsson

Summary, in English

BACKGROUND: The effectiveness of mammography screening for women ages 40 to 49 years still is questioned, and few studies of the effectiveness of service screening for this age group have been conducted. METHODS: Breast cancer mortality was compared between women who were invited to service screening at ages 40 to 49 years (study group) and women in the same age group who were not invited during 1986 to 2005 (control group). Together, these women comprise the Mammography Screening of Young Women (SCRY) cohort, which includes all Swedish counties. A prescreening period was defined to facilitate a comparison of mortality in the absence of screening. The outcome measure was refined mortality, ie, breast cancer death for women who were diagnosed during follow-up at ages 40 to 49 years. Relative risks (RRs) with 95% confidence intervals (Os) were estimated. RESULTS: There was no significant difference in breast cancer mortality during the prescreening period. During the study period, there were 803 breast cancer deaths in the study group (7.3 million person-years) and 1238 breast cancer deaths in the control group (8.8 million person-years). The average follow-up was 16 years. The estimated RR for women who were invited to screening was 0.74 (95% Cl, 0.66-0.83), and the RR for women who attended screening was 0.71 (95% CI, 0.620.80). CONCLUSIONS: In this comprehensive study, mammography screening for women ages 40 to 49 years was efficient for reducing breast cancer mortality. Cancer 2011;117:714-22. (C) 2010 American Cancer Society.

Department/s

  • Radiology Diagnostics, Malmö

Publishing year

2011

Language

English

Pages

714-722

Publication/Series

Cancer

Volume

117

Issue

4

Document type

Journal article

Publisher

John Wiley & Sons Inc.

Topic

  • Cancer and Oncology

Keywords

  • mammography
  • screening
  • breast cancer
  • mortality

Status

Published

Research group

  • Radiology Diagnostics, Malmö

ISBN/ISSN/Other

  • ISSN: 1097-0142