wrapper to invoke PAS or UN ax methods given qx or mx

Given either mx or qx, call either the lt_a_un() or lt_a_pas() functions.

lt_id_morq_a(
  nMx,
  nqx,
  axmethod = "pas",
  Age,
  AgeInt,
  a0rule = "ak",
  IMR = NA,
  Sex = "m",
  region,
  OAG = TRUE,
  mod = TRUE,
  SRB = SRB,
  extrapLaw = "kannisto",
  extrapFrom = max(Age),
  extrapFit = Age[Age >= 60],
  ...
)

Arguments

nMx	numeric. Event exposure mortality rates.
nqx	numeric. Vector of age specific death probabilities in standard abridged age groups.
axmethod	character. Either `"pas"` or `"un"`
Age	integer. A vector of ages of the lower integer bound of the age classes.
AgeInt	integer. Vector of age interval widths.
a0rule	character. Either `"ak"` (default) or `"cd"`.
IMR	numeric. Optional. q₀, the death probability in first year of life, in case available separately.
Sex	character. `"m"`, `"f"` or `"b"` for male, female, or both.
region	character. `"n"`, `"e"`, `"s"` or `"w"` for North, East, South, or West.
OAG	logical. Whether or not the last element of `nMx` is the open age group Default `TRUE`.
mod	logical. Whether or not to use Gerland's modification for ages 5-14. Default `TRUE`.
SRB	numeric. The sex ratio at birth (boys/girls), default 1.05.
extrapLaw	character. If extrapolating, which parametric mortality law should be invoked? Options include `"Kannisto", "Kannisto_Makeham", "Makeham","Gompertz", "GGompertz", "Beard", "Beard_Makeham", "Quadratic"`. Default `"Kannisto"`. See details.
extrapFrom	integer. Age from which to impute extrapolated mortality.
extrapFit	integer vector. Ages to include in model fitting. Defaults to all ages `> =60`.
...	Other arguments to be passed on to the `MortalityLaw` function.

Value

nax average contribution to exposure of those dying in the interval.

References

Greville TN (1977). “Short methods of constructing abridged life tables.” In Mathematical Demography, 53--60. Springer. United Nations (1982). Model Life Tables for Developing Countries. United Nations Department of International Economic and Social Affairs. Arriaga EE, Johnson PD, Jamison E (1994). Population analysis with microcomputers, volume 1. Bureau of the Census. United Nations (1988). Mortpak- The United Nations Software Package for Mortality Measurement. United Nations Department of International Economic and Social Affairs. United Nations (1983). Manual X: Indirect Techniques for Demographic Estimation, number 81. United Nations Department of International Economic and Social Affairs, New York. United States Census Bureau (2017). “Population Analysis System (PAS) Software.” https://www.census.gov/data/software/pas.html, https://www.census.gov/data/software/pas.html.