Generates indices from a mortAAR life table for use in other functions

This function bundles a number of indices and vectors from a mortAAR life table which are needed by other functions in mortAAR. The results are only meaningful if 5-year-categories have been chosen to construct the life table.

Usage

lt.indices(life_table)

Arguments

life_table: an object of class mortaar_life_table.

Value

A list with the following indices and vectors:

child_i: ratio of individuals aged 5–9 to those aged 10–14 according to Masset and Bocquet 1977.
juvenile_i: ratio of individuals aged 5–14 to adults according to Masset and Bocquet 1977.
P(5-19): ratio of individuals aged 5–19 to those aged 5 or above according to Bocquet-Appel 2002.
D30_D5): ratio of individuals aged 30 and above to those aged 5 or above according to Buikstra et al. 1986.
D0_14_D: proportion of individuals aged 0–14 according to McFadden & Oxenham 2018a if infants are represented well.
D15_49_D15plus: proportion of individuals aged 15–49 according to Taylor & Oxenham 2024.
e0: life expectancy at age 0.

References

bocquet_appel_2002mortAAR

masset_bocquet_1977mortAAR

buikstra_et_al_1986mortAAR

mcfadden_oxenham_2018amortAAR

taylor_oxenham_2024mortAAR

Examples

schleswig <- life.table(schleswig_ma[c("a", "Dx")])
lt.indices(schleswig)
#> $child_i
#> [1] 1.833333
#> 
#> $d5_9
#> [1] 22
#> 
#> $d10_14
#> [1] 12
#> 
#> $juvenile_i
#> [1] 0.2193548
#> 
#> $d5_14
#> [1] 34
#> 
#> $d20plus
#> [1] 155
#> 
#> $senility_i
#> [1] 0.2774194
#> 
#> $d0plus
#> [1] 247
#> 
#> $d60plus
#> [1] 43
#> 
#> $p5_19
#> [1] 0.213198
#> 
#> $D30_D5
#> [1] 0.5668016
#> 
#> $D0_14_D
#> [1] 0.340081
#> 
#> $d0_14
#> [1] 84
#> 
#> $D15_49_D15plus
#> [1] 0.5153374
#> 
#> $e0
#> [1] 30.67139
#>