Assuming we have an external estimate of age 0, this method refits to the ordinary Beers single age results, remaining constrained to the original 5-year age groups and smoothly blending into ages greater than 10.

graduate_beers_johnson(Age0, pop5, pop1)

Arguments

Age0

numeric. An estimate of age 0.

pop5

numeric. Matrix of age-period population counts in 5-year age groups.

pop1

numeric. Matrix of age-period population using Beers ordinary (or some other) method.

Value

A matrix of single age population estimates.

Details

This has not been tested using pop1 as generated from other methods, such as the Beers modified, Sprague, or Grabill methods. Called internally by beers().

References

Stover J, Johnson P, Zaba B, Zwahlen M, Dabis F, Ekpini RE (2008). “The Spectrum projection package: improvements in estimating mortality, ART needs, PMTCT impact and uncertainty bounds.” Sexually Transmitted Infections, 84(Suppl 1), i24--i30.