calc_nqx_brass: Estimate child mortality from sbh information
In ihmeuw-demographics/demCore: Core Functions for Demography

calc_nqx_brass

R Documentation

Estimate child mortality from sbh information

Description

Estimate child mortality from sbh information from one source using the Brass method with Trussell coefficients.

Usage

calc_nqx_brass(
  dt,
  id_cols = c("age_start", "age_end"),
  parity_col = "Pi",
  prop_died_col = "Di",
  model_schedule = "West"
)

Arguments

`dt`	[`data.table()`] sbh data with `id_cols`, `parity_col`, `prop_died_col`.
`id_cols`	[`character()`] ID columns that uniquely identify each row of `dt`. This must include 'age_start' and 'age_end'.
`parity_col`	[`character(1)`] Name of column storing the average parity for each maternal age group. Default is 'Pi'.
`prop_died_col`	[`character(1)`] Name of column storing the proportion of children who have died for each maternal age group. Default is 'Di'.
`model_schedule`	[`character(1)`] Name of model fertility schedule to use from `sbh_trussell_coeffs`. Default is "West". Other implemented option is "North".

Details

The method reproduced in this function is described in Section B of Chapter III in the UN Population Division Manual X. It estimates the probability of child mortality with data classified by maternal age from one survey or census.

Summary of steps:

Confirm average parity for each maternal age group ('P(i)') and proportion of children who have died for each maternal age group ('D(i)') are included in the input data.
Use estimation equations to calculate probability of child mortality:

k(i)=a(i) + b(i) (P(1)/P(2)) + c(i) (P(2)/P(3))

q(x) = k(i)D(i)
Use estimation equation to calculate reference period:

t(x)=a(i) + b(i) (P(1)/P(2)) + c(i) (P(2)/P(3))

Value

[data.table()] with id_cols, the estimated probability of dying ('nqx'), and the reference period ('tx').

References

UN Population Division. 1983. Manual X: Indirect Techniques for Demographic Estimation. New York: United Nations, Department of Economic and Social Affairs, ST/ESA/SER.A/81. http://www.un.org/esa/population/techcoop/DemEst/manual10/manual10.html

Examples

calc_nqx_brass(
  dt = sbh_panama_1976,
  id_cols = c("sex", "age_start", "age_end"),
  model = "West"
)
calc_nqx_brass(
  dt = sbh_panama_1976,
  id_cols = c("sex", "age_start", "age_end"),
  model = "North"
)

ihmeuw-demographics/demCore documentation built on Feb. 24, 2024, 11:05 p.m.