tidy_avg_slopes: Marginal Slopes / Effects with...

In broom.helpers: Helpers for Model Coefficients Tibbles

Marginal Slopes / Effects with marginaleffects::avg_slopes()

Description

Use marginaleffects::avg_slopes() to estimate marginal slopes / effects and return a tibble tidied in a way that it could be used by broom.helpers functions. See marginaleffects::avg_slopes() for a list of supported models.

Usage

tidy_avg_slopes(x, conf.int = TRUE, conf.level = 0.95, ...)

Arguments

x	(a model object, e.g. glm) A model to be tidied.
conf.int	(logical) Whether or not to include a confidence interval in the tidied output.
conf.level	(numeric) The confidence level to use for the confidence interval (between 0 ans 1).
...	Additional parameters passed to marginaleffects::avg_slopes().

Details

By default, marginaleffects::avg_slopes() estimate average marginal effects (AME): an effect is computed for each observed value in the original dataset before being averaged. Marginal Effects at the Mean (MEM) could be computed by specifying newdata = "mean". Other types of marginal effects could be computed. Please refer to the documentation page of marginaleffects::avg_slopes().

For more information, see vignette("marginal_tidiers", "broom.helpers").

See Also

marginaleffects::avg_slopes()

Other marginal_tieders: tidy_all_effects(), tidy_avg_comparisons(), tidy_ggpredict(), tidy_marginal_contrasts(), tidy_marginal_predictions(), tidy_margins()

Examples

# Average Marginal Effects (AME)

df <- Titanic |>
  dplyr::as_tibble() |>
  tidyr::uncount(n) |>
  dplyr::mutate(Survived = factor(Survived, c("No", "Yes")))
mod <- glm(
  Survived ~ Class + Age + Sex,
  data = df, family = binomial
)
tidy_avg_slopes(mod)
tidy_plus_plus(mod, tidy_fun = tidy_avg_slopes)

mod2 <- lm(Petal.Length ~ poly(Petal.Width, 2) + Species, data = iris)
tidy_avg_slopes(mod2)

# Marginal Effects at the Mean (MEM)
tidy_avg_slopes(mod, newdata = "mean")
tidy_plus_plus(mod, tidy_fun = tidy_avg_slopes, newdata = "mean")

broom.helpers documentation built on June 8, 2025, 12:40 p.m.