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For the UK I made that chart a while ago. The survival curves show what share survives up to any age. (This is the period measure.) For the 80+ you were asking about it was at around 8% in the past, around a third in the 60s, and around two thirds are surviving to 80+ today.pic.twitter.com/KmdtZjvAdI
Fascinating shape. It's like a billowing sail. Interestingly, one of the most conspicuous things you can see on it is the hopelessness, based on trends so far at least, of increasing maximum lifespan. More people make it to the limit, but the limit doesn't move.
Death and Taxes
Look again. Over past 100 years, limit for top 1% moved from approx 93 to 103. This is significant
Yes, past changes don’t point towards a big increase of the upper limit of life’s length. The past change in mortality is mostly a reduction of the inequality of life lengths.
The hope for an increase in the maximum is unlikely coming from the changes that reduced mortality for the <80 in the past. In the past people died at all ages, increasingly people die at around the same age. Demographers call it the rectangularization of the survival curve.
Geoffrey West’s book Scale has some interesting insight on lifespan.https://www.goodreads.com/book/show/31670196 …
Makes sense as all applicable advances treat the results of aging: age-related diseases, instead aging itself, in which damage continues to accumulate unabated.
Was just working on death by age data and this is the data for the world as a whole. In the period 1950 to 1954 more than 20 million children died every year. Since then the number of annual child deaths declined 3-fold. And the number of older people's deaths doubled.pic.twitter.com/2ZXR2XN7We
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