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December 18, 1991

A Switch in Time Saves a Statistical Bind-Reply

Author Affiliations

Pulse Editor Journal of the American Medical Association Chicago, Ill

Pulse Editor Journal of the American Medical Association Chicago, Ill

JAMA. 1991;266(23):3284-3285. doi:10.1001/jama.1991.03470230042021

In Reply.  —It is important to note that the statistics in the article are lifetime prevalence rates rather than annual incidence rates, a point that is easily confused. The American Cancer Society's annual publication, Cancer Facts and Figures, estimates that in 1991 approximately 175 000 women will develop breast cancer.1 Overall, 1.1 million new cases of cancer will be diagnosed this year, and 514 000 women will die from the disease (1400 women each day). The lifetime risk for women developing breast cancer has recently been determined to increase from one in 10 women to one in nine women, a change reflecting both a rising incidence of breast cancer and an aging population.1 These results are compiled by the American Cancer Society using data collected through the National Cancer Institute's Survey of Epidemiological End Results, an accumulation of actual incidence rates from 10 US oncologic registries.