Health Utility None http://www.ncbi.nlm.nih.gov/pubmed/7674256 Health Utility Measure Request inclusion into relevant ontology Health Utility Index Utility measures of health related quality of life are preference values that patients attach to their overall health status. In clinical trials, utility measures summarize both positive and negative effects of an intervention into one value between 0 (equal to death) and 1 (equal to perfect health). These measures allow for comparison of patient outcomes of different diseases, and for comparison between various health care interventions. There are 2 different approaches to utility measurement. Quality of Health Care