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Screening Mammography & Breast Cancer Mortality: Meta-Analysis of Quasi-Experimental Studies

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  • Veronica L Irvin
  • Robert M Kaplan

Abstract

Background: The magnitude of the benefit associated with screening has been debated. We present a meta-analysis of quasi-experimental studies on the effects of mammography screening. Methods: We searched MEDLINE/PubMed and Embase for articles published through January 31, 2013. Studies were included if they reported: 1) a population-wide breast cancer screening program using mammography with 5+ years of data post-implementation; 2) a comparison group with equal access to therapies; and 3) breast cancer mortality. Studies excluded were: RCTs, case-control, or simulation studies. We defined quasi-experimental as studies that compared either geographical, historical or birth cohorts with a screening program to an equivalent cohort without a screening program. Meta-analyses were conducted in Stata using the metan command, random effects. Meta-analyses were conducted separately for ages screened: under 50, 50 to 69 and over 70 and weighted by population and person-years. Results: Among 4,903 published papers that were retrieved, 19 studies matched eligibility criteria. Birth cohort studies reported a significant benefit for women screened

Suggested Citation

  • Veronica L Irvin & Robert M Kaplan, 2014. "Screening Mammography & Breast Cancer Mortality: Meta-Analysis of Quasi-Experimental Studies," PLOS ONE, Public Library of Science, vol. 9(6), pages 1-11, June.
    • Handle: RePEc:plo:pone00:0098105
    DOI: 10.1371/journal.pone.0098105
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    References listed on IDEAS

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    1. Leung, G.M. & Lam, T.-H. & Thach, T.Q. & Hedley, A.J., 2002. "Will screening mammography in the east do more harm than good?," American Journal of Public Health, American Public Health Association, vol. 92(11), pages 1841-1846.
    2. Cooper, G.S. & Yuan, Z. & Bowlin, S.J. & Dennis, L.K. & Kelly, R. & Chen, H. & Rimm, A.A., 1998. "An ecological study of the effectiveness of mammography in reducing breast cancer mortality," American Journal of Public Health, American Public Health Association, vol. 88(2), pages 281-284.
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    Cited by:

    1. Moran, Patrick & Cullinan, John, 2022. "Is mammography screening an effective public health intervention? Evidence from a natural experiment," Social Science & Medicine, Elsevier, vol. 305(C).

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