送交者: mangolasi 于 2005-12-06, 16:36:09:
回答: they are really the same thing 由 wasguru 于 2005-12-06, 16:27:16:
the young to mid age educated should compare with their cohort of age.
While the article zt by fieldcow is comparing the cohorts of common people and the educated, all ages average. I think the latter is more valid to prove the life expectancy of educated people vs less educated people.