# NOT RUN {
two_country <- dplyr::filter(example, country %in% c("NZ" , "BRA"))
boot_inv_eff_result <- boot_inv_eff(n = 10,
n_sample = 200, df = two_country, group = "country",
items = paste0("voice",1:3, "m"))
format_boot_inv_eff(boot_inv_eff_result)
# }
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