The above article, published online on January 17,2007, in Wiley Online Library (, has been retracted by agreement between the authors, the journal Editor in Chief, Walley J. Temple, and Wiley Periodicals, Inc. The retraction has been agreed due to a substantially similar article having been published elsewhere: Lai, J.K., Martin, M.A., Meyricke, R., O'Neill, T., and Roberts, S. (2007) Factors Associated with Short-term Hospital Readmission Rates for Breast Cancer Patients in Western Australia: an Observational Study. Journal of the American College of Surgeons, 204, 193–200.