Recent oral contraceptive use and risk of breast cancer (United States)

  title={Recent oral contraceptive use and risk of breast cancer (United States)},
  author={Polly A Newcomb and Matthew Paul Longnecker and Barry E Storer and Robert Mittendorf and John A. Baron and Richard W. Clapp and Amy Trentham-Dietz and Walter C Willett},
  journal={Cancer Causes & Control},
We examined the association between recent oral contraceptive (OC) use and the risk of breast cancer in data from a large population-based case-control study in the United States. Cases (n=6,751) were women less than 75 years old who had breast cancer identified from statewide tumor registries in Wisconsin, Massachusetts, Maine, and New Hampshire. Controls (n=9,311) were selected randomly from lists of licensed drivers (if aged under 65 years) and from lists of Medicare beneficiaries (if aged… CONTINUE READING


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