Derive lifetable death probabilities from survivorship.

Source: R/lt_id.R

This lifetable identity is the same no matter what kind of lifetable is required. You can find it in any demography textbook.

lt_id_l_q(lx)

Arguments

lx

numeric. Vector of age-specific lifetable survivorship.

Value

qx values of age-specific mortality rates. The last value is always 1.0

Details

The vector returned is the same length as lx.

References

Preston S, Heuveline P, Guillot M (2000). Demography: measuring and modeling population processes. Wiley-Blackwell.