# Empirical View
Mortality by age refers to age-specific mortality rates; in other words, how much longer you are expected to live given you have already reached a particular age. As with life expectancy, age-specific life expectancy has increased dramatically in the past couple of centuries. You find much more information in our entry on Life Expectancy.
# Total life expectancy in the UK by age, 1541-2001 – Max Roser1
This is taken from Kertzer and Laslett (eds) (1995) – Aging in the Past: Demography, Society, and Old Age. Berkeley: University of California Press. Online here.
According to this source the data is taken from Cambridge Group back projection files and English Life tables up to no. 15. and they credit James Oeppen as the author of this work.[/ref]3
# Median age
# Data Sources
For information and visualizations see the section in the entry on Life Expectancy.