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Returns population size (estimated or fixed)

Source: R/methods.R
pop_size.Rd

Returns population size that is assumed to be

  • fixed – if it is based on the pop_size argument,

  • estimated – if it is based on the probability survey specified in the svydesign or based on the estimated propensity scores for the non-probability sample.

Usage

pop_size(object)

Arguments

object

object returned by the nonprob function.

Value

a scalar returning the value of the population size.

Examples


data(admin)
data(jvs)

jvs_svy <- svydesign(ids = ~ 1,  weights = ~ weight,
strata = ~ size + nace + region, data = jvs)

ipw_est1 <- nonprob(selection = ~ region + private + nace + size,
target = ~ single_shift,
svydesign = jvs_svy,
data = admin, method_selection = "logit"
)

ipw_est2 <- nonprob(
selection = ~ region + private + nace + size,
target = ~ single_shift,
svydesign = jvs_svy,
data = admin, method_selection = "logit",
control_selection = control_sel(est_method = "gee", gee_h_fun = 1))

## estimated population size based on the non-calibrated IPW (MLE)
pop_size(ipw_est1)
#> pop_size 
#>    51870 

## estimated population size based on the calibrated IPW (GEE)
pop_size(ipw_est2)
#> pop_size 
#>    51870