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Re:China overtakes U.S. for healthy lifespan: WHO data by roenxi on Wednesday May 30, 2018 @11:03PM (#17193641)
The story looks like a credible source of facts, but any takeaway is a minefield of ways to be wrong. I assume life expectancy is vulnerable to Simpson's paradox and that the we really need detailed analysis to determine why the aggregate difference exists.

Without that the differences in the article are not large enough to really draw anything out of except vague feelings of national pride.

Life expectancy is also a dangerous QoL metric in itself because it is so influenced by so many things (particularly infant mortality) that although longer is generally better it doesn't paint a very detailed picture. In an extreme case; I know that a pretty reasonable percentage of very elderly people would argue that a prolonged life leads to lower quality. "Healthy life expectancy" might be a much better indicator, but that looks like a technical term and I don't see a definition for it.

Re:China overtakes U.S. for healthy lifespan: WHO data by 8note on Thursday May 31, 2018 @12:44AM (#17194015)
I'm surprised there's no measure for life expectancy, given you made it to age 20.
Re:China overtakes U.S. for healthy lifespan: WHO data by ldp01 on Thursday May 31, 2018 @02:18AM (#17194321)
There is!

https://en.wikipedia.org/wiki/Survival_function

I understand this is what actuaries spend their days tabulating. (I am an engineer not an actuary but in the past I been involved in efforts to apply the same maths to asset aging. However your mileage varies massively with the quality of your data).