Published online by Cambridge University Press: 21 June 2016
Life expectancy has been the most popular outcome measurement for decision analyses. The effectiveness, or utility, of a strategy is expressed in years of life gained over a baseline state. This is particularly useful from a public health standpoint when a fixed budget must be used to serve a diverse population. For example, should money be spent on influenza vaccination programs or cholesterol screening? A decision analysis to answer this question might use cost per year of life gained as the primary outcome. Essentially, the public health provider is seeking to minimize cost while maximizing life expectancy. Strategies could be ordered and priority given according to rank.