Survival as a function of life expectancy
نویسندگان
چکیده
It is well known that life expectancy can be expressed as an integral of the survival curve. The reverse that the survival function can be expressed as an integral of life expectancy is also true. 1. Relationship Let e(a) denote remaining life expectancy at age a and let `(a) denote the proportion surviving to age a (the survival function). Then (1) l(a) = e(0) e(a) exp ( − ∫ a
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