Calculates Xu' Omega-squared value, a simple R2 equivalent for linear mixed models.

r2_xu(model)

Arguments

model

A linear (mixed) model.

Value

The R2 value.

Details

r2_xu() is a crude measure for the explained variance from linear (mixed) effects models, which is originally denoted as Ω2.

References

Xu, R. (2003). Measuring explained variation in linear mixed effects models. Statistics in Medicine, 22(22), 3527–3541. doi: 10.1002/sim.1572

Examples

model <- lm(Sepal.Length ~ Petal.Length + Species, data = iris) r2_xu(model)
#> Xu's R2 #> 0.8367238