effectsize: standardize_info – R documentation

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standardize_info

Get Standardization Information

Description

This function extracts information, such as the deviations (SD or MAD) from parent variables, that are necessary for post-hoc standardization of parameters. This function gives a window on how standardized are obtained, i.e., by what they are divided. The "basic" method of standardization uses.

Usage

standardize_info(
  model,
  robust = FALSE,
  two_sd = FALSE,
  include_pseudo = FALSE,
  ...
)

Arguments

`model`	A statistical model.
`robust`	Logical, if `TRUE`, centering is done by subtracting the median from the variables and dividing it by the median absolute deviation (MAD). If `FALSE`, variables are standardized by subtracting the mean and dividing it by the standard deviation (SD).
`two_sd`	If `TRUE`, the variables are scaled by two times the deviation (SD or MAD depending on `robust`). This method can be useful to obtain model coefficients of continuous parameters comparable to coefficients related to binary predictors, when applied to the predictors (not the outcome) (Gelman, 2008).
`include_pseudo`	(For (G)LMMs) Should Pseudo-standardized information be included?
`...`	Arguments passed to or from other methods.

Value

A data frame with information on each parameter (see parameters::parameters_type), and various standardization coefficients for the post-hoc methods (see standardize_parameters()) for the predictor and the response.

Examples

model <- lm(mpg ~ ., data = mtcars)
standardize_info(model)
standardize_info(model, robust = TRUE)
standardize_info(model, two_sd = TRUE)

effectsize

Indices of Effect Size and Standardized Parameters

v0.4.4-1

GPL-3

Authors

Mattan S. Ben-Shachar [aut, cre] (<https://orcid.org/0000-0002-4287-4801>), Dominique Makowski [aut] (<https://orcid.org/0000-0001-5375-9967>), Daniel Lüdecke [aut] (<https://orcid.org/0000-0002-8895-3206>), Indrajeet Patil [ctb] (<https://orcid.org/0000-0003-1995-6531>, @patilindrajeets), Ken Kelley [ctb], David Stanley [ctb]

Initial release