Despite modest gains in lifespan over the past century, the United States still trails many of the world's countries when it comes to life expectancy, and its poorest citizens live approximately five years less than more affluent persons, according to a new study from Rice University and the University Colorado at Boulder.
The study, "Stagnating Life Expectancies and Future Prospects in an Age of Uncertainty," used time-series analysis to evaluate historical data on U.S. mortality from the Human Mortality Database. The study authors reviewed data from 1930 through 2000 to identify trends in mortality over time and forecast life expectancy to the year 2055. Their research will be published in an upcoming issue of Social Science Quarterly.
Although the researchers found that the U.S. can expect very moderate gains in coming years (less than an additional three years through 2055), the U.S. still trails its developed counterparts in life expectancy. For example, the average life expectancy in the U.S. for a person born today is is 78.49, which is significantly lower than people born in Monaco, Macau and Japan, which have the three highest life expectancies (89.68, 84.43 and 83.91 years, respectively). In addition, the most deprived U.S. citizens tend to live five years less than their more affluent countrymen, according to Justin Denney, Rice assistant professor of sociology, who was principal author for the study.
Denney said that in 1930, average life expectancy in the United States was 59.85. By 2000, it rose to 77.1 years. "But when broken down, these numbers show that those gains were mostly experienced between 1930 the 1950s and 1960s," he said. "Since that time, gains in life expectancy have flattened out.
"During periods of expansion in length of life, a similar expansion has occurred between more and less advantaged groups the rich get richer, the poor get poorer, inequality grows and life expectancy is dramat
|Contact: David Ruth|