Disclaimer: This tool is intended for use by doctors. The results of this tool should never be used alone to determine a patient's medical treatment. This tool is a statistical model and is not a substitute for an individual treatment plan developed by a doctor with personal knowledge of a specific patient. Other important factors that must be considered include the patient's own medical history, the patient's family history, and the experience, knowledge and training of the doctor. Doctors should personally discuss these results with patients as part of their overall treatment recommendations. The rationale for development of, and details regarding, this tool are provided in the study "Improving the Understanding of Adjuvant Therapy Benefits for Colon Cancer: A Prognostic Tool Developed From a Pooled Analysis" presented at the 2003 annual session of the American Society of Clinical Oncology (ASCO).