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The relation between oral contraceptive (OC) use and breast cancer risk remains under constant surveillance. To study the effects of OC use on risk for death from breast cancer, investigators analyzed cancer registry data from the Surveillance, Epidemiology, and End Results Program in conjunction with linked data from the population-based, case-control Cancer and Steroid Hormone (CASH) study. Fifteen-year survival was assessed in 4292 women who had been diagnosed with breast cancer and who were interviewed about reproductive contraceptive and disease history, family history, and personal characteristics and behaviors during the CASH study (conducted from 1980 through 1982).
During the 15-year follow-up, 1473 of the women died from breast can…