graduate_sprague: The basic Sprague age-splitting method.
In hhmacedo/dmtls: Convert Age Groups Into Single Ages

Description Usage Arguments Details Value

This method is used to interpolate counts based on the Sprague formula. It is based on the first stage of the Sprague R script prepared by Thomas Buettner and Patrick Gerland, itself based on the description in Siegel and Swanson, 2004, p. 727.

1	graduate_sprague(Value, Age, AgeInt, OAG = TRUE)

`Value`	numeric vector, presumably counts in grouped ages
`Age`	integer vector, lower bounds of age groups
`AgeInt`	integer vector, age interval widths
`OAG`	logical, default = `TRUE` is the final age group open?

Ages should refer to lower age bounds, ending in the open age group in the last row (not a closed terminal age). Dimension labeling is necessary. There must be at least six age groups (including the open group). One year of data will work as well, as long as it's given as or coercible to a single-column matrix. This method may produce negative values, most likely in the youngest or oldest ages. This case is dealt with in the graduate() wrapper function but not in this function.

If the highest age does not end in a 0 or 5, and OAG == TRUE, then the open age will be grouped down to the next highest age ending in 0 or 5. If the highest age does not end in a 0 or 5, and OAG == FALSE, then results extend to single ages covering the entire 5-year age group.

Numeric vector of counts split into single ages.

hhmacedo/dmtls documentation built on Dec. 20, 2021, 3:49 p.m.