skip_on_os(c("mac", "solaris"))
skip_if_not_installed("survey")
skip_if_not_installed("sjstats")
skip_if_not_installed("sjlabelled")
test_that("ggpredict, svyglm.nb", {
data(nhanes_sample, package = "sjstats")
# create survey design
des <- survey::svydesign(
id = ~SDMVPSU,
strat = ~SDMVSTRA,
weights = ~WTINT2YR,
nest = TRUE,
data = nhanes_sample
)
# fit negative binomial regression
fit <- sjstats::svyglm.nb(total ~ RIAGENDR + age + RIDRETH1, des)
expect_s3_class(ggpredict(fit, "age"), "data.frame")
expect_s3_class(ggpredict(fit, c("age", "RIAGENDR")), "data.frame")
})
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