The Geriatric Assessment Tool takes into account well validated measures of functional status, co-morbid medical conditions, cognitive function, psychological state, nutritional status, social activity, and social support. Pilot data demonstrates the feasibility of this assessment which can be completed in less than 30 minutes; however, this assessment is completed by pencil and paper, and therefore requires an interviewer to deliver, score, and summarize the assessment results. The development of a computer based Geriatric Assessment Tool would have practical importance for both research and clinical practice. It could potentially allow more efficient data collection and analysis in the research setting. In turn it would potentially influence clinical decision making by medical oncologists given its ability to predict chemotherapy related toxicity among geriatric oncology patients across all tumor types.