Some patients are already very sick before they come to the hospital. The mortality index compares the number of inpatient Medicare deaths occurring within 30 days of admission in 2006, 2007, and 2008 with the number of deaths that would be expected in any group of people with corresponding age, severity of illness, and other risk factors.
A mortality index (which is a mathematical calculation) of less than 1 means that patients “do better” than would be expected based on how ill patients were when they came to the hospital. Our patients do much better, with a mortality index of only 0.12.
Note: Data source: U.S.News & World Report (August 2010)