Transfer To Utility or TTU is a technique devised by L Segal, G Hawthorne, A Harris, J. Sturm for mapping health status onto a utility score to achieve a common metric for comparing the performance of disparate interventions in Australia across modalities and stages of disease (translate published trial outcomes into a health-related quality-of-life [utility] scale, creating a common metric which supported comparisons between disparate interventions) in the context of Depression, stroke and Rheumatoid Arthritis.
An example quoted by Professor Leonie Segal is that a 0.304 increase in utility score for a hip replacement indicates a patient would, on average, be willing to forgo 30.4% of remaining life-years to obtain the benefits of such surgery.
See also Quality-Adjusted Life Years and Section 18(a).