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Age Gap Decision Tool

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For Adverse events, general enquiries and feedback on the tool, please contact us by emailing agegap@sheffield.ac.uk

Thank you.

The Age Gap Decision Tool is a software medical device that provides reference information to help a Healthcare Professional to use their knowledge to make a clinical decision.

Version 1.0
©2025 The University of Sheffield
Built by epiGenesys

Please Note: The Age Gap on line tool uses a mathematic model based on information from many thousands of women over the age of 70 years diagnosed with early breast cancer between 2002 and 2012. Data was obtained using the UK cancer registration service. Outcomes are predicted based on the actual outcomes of these women. The model was developed on one set of data from the West Midlands and Northern and Yorkshire regions which has been subjected to peer review and published and has been validated on a second dataset to enhance accuracy and reliability. Despite this, as with any mathematical model, it may be inaccurate for an individual woman and can only provide an estimate of likely outcomes. The tool is designed to be used in consultation with an expert clinician and take into account a wide range of parameters and in collaboration with the patient and her preferences and opinions.