As average life spans have lengthened, age is no longer the best measure to compare well-being and behavior between different generations. A report from the Urban Institute proposes two alternative measures of “age” based on life expectancy that can provide better insights into the conditions and future needs of older adults.
The report can be obtained at https://www.urban.org/sites/default/files/publication/98523/how_alternative_measures_of_age_can_affect_research_conclusions_1.pdf.