sjstats (version 0.19.0)

anova_stats: Effect size statistics for anova

Description

Returns the (partial) eta-squared, (partial) omega-squared, epsilon-squared statistic or Cohen's F for all terms in an anovas. anova_stats() returns a tidy summary, including all these statistics and power for each term.

Usage

anova_stats(model, digits = 3)

Value

A data frame with all statistics is returned (excluding confidence intervals).

Arguments

model

A fitted anova-model of class aov or anova. Other models are coerced to anova.

digits

Amount of digits for returned values.

References

Levine TR, Hullett CR (2002): Eta Squared, Partial Eta Squared, and Misreporting of Effect Size in Communication Research.

Tippey K, Longnecker MT (2016): An Ad Hoc Method for Computing Pseudo-Effect Size for Mixed Model.

Examples

# load sample data
data(efc)

# fit linear model
fit <- aov(
  c12hour ~ as.factor(e42dep) + as.factor(c172code) + c160age,
  data = efc
)
anova_stats(car::Anova(fit, type = 2))