pop_size: Returns population size (estimated or fixed)

In nonprobsvy: Inference Based on Non-Probability Samples

Returns population size (estimated or fixed)

Description

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)

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

nonprobsvy documentation built on April 3, 2025, 7:08 p.m.