Find ax[1:2] indicators using Coale-Demeny coefficients Here we adjust the first two values of ax to account for infant mortality more accurately
coale.demeny.ax(x, mx, ax, sex)
A vector of coefficients
Vector of ages at the beginning of the age interval.
Life table death rate in age interval [x, x+n).
Numeric scalar. Subject-time alive in age-interval for those who
die in the same interval. If NULL
this will be estimated. A common
assumption is ax = 0.5
, i.e. the deaths occur in the middle of
the interval. Default: NULL
.
Sex of the population considered here. Default: NULL
.
This argument affects the first two values in the life table ax column.
If sex is specified the values are computed based on the Coale-Demeny method
and are slightly different for males than for females.
Options: NULL, male, female, total
.