glance.betamfx: Glance at a(n) betamfx object

Description

Glance accepts a model object and returns a tibble::tibble() with exactly one row of model summaries. The summaries are typically goodness of fit measures, p-values for hypothesis tests on residuals, or model convergence information.

Glance never returns information from the original call to the modeling function. This includes the name of the modeling function or any arguments passed to the modeling function.

Glance does not calculate summary measures. Rather, it farms out these computations to appropriate methods and gathers the results together. Sometimes a goodness of fit measure will be undefined. In these cases the measure will be reported as NA.

Glance returns the same number of columns regardless of whether the model matrix is rank-deficient or not. If so, entries in columns that no longer have a well-defined value are filled in with an NA of the appropriate type.

Usage

# S3 method for betamfx
glance(x, ...)

Value

A tibble::tibble() with exactly one row and columns:

AIC: Akaike's Information Criterion for the model.
BIC: Bayesian Information Criterion for the model.
df.null: Degrees of freedom used by the null model.
df.residual: Residual degrees of freedom.
logLik: The log-likelihood of the model. [stats::logLik()] may be a useful reference.
nobs: Number of observations used.
pseudo.r.squared: Like the R squared statistic, but for situations when the R squared statistic isn't defined.

Arguments

x

A betamfx object.

...

Additional arguments. Not used. Needed to match generic signature only. Cautionary note: Misspelled arguments will be absorbed in ..., where they will be ignored. If the misspelled argument has a default value, the default value will be used. For example, if you pass conf.lvel = 0.9, all computation will proceed using conf.level = 0.95. Two exceptions here are:

tidy() methods will warn when supplied an exponentiate argument if it will be ignored.
augment() methods will warn when supplied a newdata argument if it will be ignored.

Details

This glance method wraps glance.betareg() for mfx::betamfx() objects.

Examples

Run this code

if (FALSE) { # rlang::is_installed("mfx")
 
library(mfx)

# Simulate some data
set.seed(12345)
n = 1000
x = rnorm(n)

# Beta outcome
y = rbeta(n, shape1 = plogis(1 + 0.5 * x), shape2 = (abs(0.2*x)))
# Use Smithson and Verkuilen correction
y = (y*(n-1)+0.5)/n

d = data.frame(y,x)
mod_betamfx = betamfx(y ~ x | x, data = d)

tidy(mod_betamfx, conf.int = TRUE)

# Compare with the naive model coefficients of the equivalent betareg call (not run)
# tidy(betamfx(y ~ x | x, data = d), conf.int = TRUE)

augment(mod_betamfx)
glance(mod_betamfx)
}