premise: The rate of endometrial cancer has changed.
hypothesis: Endometrial cancer . If the disease is diagnosed at an early stage , the outcome is favorable , and the overall five-year survival rate in the United States is greater than 80 % . Rates of endometrial cancer have risen in a number of countries between the 1980s and 2010 . This is believed to be due to the increasing number of elderly people and increasing rates of obesity .