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October 6, 1999

Screening Mammography for Women Younger Than 50 Years

Author Affiliations

Copyright 1999 American Medical Association. All Rights Reserved. Applicable FARS/DFARS Restrictions Apply to Government Use.1999

JAMA. 1999;282(13):1225-1226. doi:10-1001/pubs.JAMA-ISSN-0098-7484-282-13-jbk1006

To the Editor: Drs Antman and Shea1 add to the confusion concerning screening women aged 40 to 49 years for breast cancer. The Canadian trial2 the authors cite did not have sufficient statistical power to evaluate women in this age group in the early years of follow-up. Furthermore, the 19 Canadian women cited in the article already had advanced breast cancer at the time they were randomized to have mammography, while only 5 with breast cancer were assigned to the control group.