Increases in Adult Lifespan in the US are Very Unequally Distributed by Income

From Hilary Waldron, Trends in Mortality Differentials and Life Expectancy for Male Social Security–Covered Workers, by Average Relative Earnings, ORES Working Paper No. 108 October 2007.  Yes, the adult survival cureves of top half and bottom half income populations were on top of each other for the 1912 birth cohort, and then most increases in life expectancy were made by the top half of the income distribution since then. 

Not sure I believe the result, but the source is credible and has received a lot of exposure.  I want to know more...declining infant mortality of the bottom half of the income distribution obscures this inequality of adult life expecancy changes if you only look at changes in life expectancy at birth.