This risk estimation dataset includes data from 2,392,998 screening mammograms (called "index mammograms") from women in the Breast Cancer Surveillance Consortium. Results of a study that used these data were published by Barlow et al. in the September 2006 issue of the Journal of the National Cancer Institute. Investigators may wish to explore modification of associations, risk factors, or statistical issues such as the effect of data imputation for missing values or alternative estimation models. The dataset used in this study was a large cross-classification of risk factors by cancer outcome. The women had no previous diagnosis of breast cancer and no breast imaging in the nine months before the index screening mammogram. All women had a mammogram in the previous five years (though not in the last nine months). Cancer registry and pathology data were linked to data on mammography and incident breast cancer (invasive or ductal carcinoma in situ) within one year after the index mammogram. See the Risk Estimation Dataset Documentation for more information about the variables in the dataset.
In August 2012, the BCSC added a second version of this risk estimation dataset. The second version limits observations to one per woman, as opposed to multiple observations. All population and other characteristics remain the same.
Acknowledge the BCSC
The following must be cited when using this dataset:
"Data collection and sharing was supported by the National Cancer Institute-funded Breast Cancer Surveillance Consortium (HHSN261201100031C). You can learn more about the BCSC at: http://www.bcsc-research.org/."
Information about the BCSC may also be included in the methods section using language such as:
"Data for this study was obtained from the BCSC: http://bcsc-research.org/."
Access the Dataset
Investigators can access this dataset by entering the information below and submitting a request for a download link for the dataset. The link and any future notices regarding data updates will be sent in an e-mail message to the address you provide. Once you receive the link, you may download the dataset(s).
Note: Links for both versions of this dataset will be given. The first version contains multiple observations per woman. The second version limits observations to one per woman.