Lifespan inequality measures uncertainty in the age at death, Tuljapurkar said. For example, when life expectancy is 80 years, then an uncertainty of 15 years in age at death means a person will likely die between the ages of 65 80 years minus 15 and 95 80 years plus 15. Lifespan inequality is the age gap between the ages of those dying early and the longest-lived.Using data on 37 countries from the Human Mortality Database, the researchers examined mortality and longevity trends between 1947 and 2007. They found that in the United States, inequality in age at death has not fallen since 1950, although life expectancy has risen. In fact, the United States has done as well as Canada and almost as well as Japan in reducing mortality for people over 65.Lifespan inequality in Canada mirrored that in the United States until 1985 – when Canada’s inequality fell sharply, due to a national health care program that kept the young healthier.
via U.S. suffers from lifespan inequality, says Stanford researcher.
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