R functions for projection of cancer incidence/mortality using the modified Hybrid methods. Modified Hybrid by adding choice of age-model, cut-trend parameter, and power 5 link function.
get_projections() extracts projection results from a hybdproj() object.
Usage
hybdproj(
cdat,
pdat,
standpop,
projfor = "incidence",
nagg = NULL,
ncase = NULL,
cuttrd = 0.04,
shortp = 0,
linkfunc = "power5",
pD = 0.05,
pGOF = 0.05
)
# S3 method for class 'hybdproj'
get_projections(
object,
...,
cdat,
pdat,
startp,
standpop = NULL,
ave5 = FALSE,
sum5 = TRUE
)Arguments
- cdat
(age groups) * N (years) historical cancer data, 15<=N<=125.
- pdat
(age groups) * (N + M) (years) observed and projected population, 5<=M<=25.
- standpop
A
StandardPopulationobject that provides the weights (proportions) for each age group in a standard population.- projfor
Specify
"incidence"or"mortality"if you want ASR as a criteria fornagg.- nagg
Number of years for data aggregation (by years). Default is 1-annual data.
- ncase
Minimum number of cancer cases/deaths per year for splitting data.
- cuttrd
Degenerating percent of trends per year after 5 years (
shortp = 0) or the first projection year.- shortp
Attenuation percent of drift term or slope for the first 5 projection years.
- linkfunc
Link function. Default is
"power5". Can be one of"log","sqrt", or"identity".- pD
Trend selecting criteria of p-value of drift (linear trend) term.
- pGOF
Model selection criteria of p-value of goodness-of-fit.
- object
Output from
hybdproj().- ...
Not currently used.
- startp
The start calendar year of projection (e.g., 2009).
- ave5
ave5 = TRUEinvokes the 5-year average method when age-only model is selected.- sum5
When the 5-year average method is used,
sum5 = TRUEcall the 5-year period based rate, otherwise (sum5 = FALSE), average the 5 rates in the 5 years for each age group.