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A method of summarising collective health within a group by calculating the average time members are expected to remain alive. Most used at the country level where the statistic is how long a newborn child is expected to live if current rates of death remain constant.

15 votes

Did people in ancient times, who survived childhood and were not killed in wars, have roughl...

This is only somewhat correct. Montagu (1994) did such a study, excluding infant deaths and later violent deaths, an concluded that The length of life for a population of ancient Greek and Roman m …
days of love iff good genes's user avatar