svy_make_scale: Creates scale by calculating item mean and returns...
In LukasWallrich/rNuggets: Useful Helper Functions for (Academic) Data Analysis

svy_make_scale

R Documentation

Creates scale by calculating item mean and returns descriptives for srvyr objects

Description

This function creates a scale by calculating the mean of a set of items, and prints and returns descriptives that allow to assess internal consistency and spread. It is primarily based on the psych::alpha function, with more parsimonious output and some added functionality.

Usage

svy_make_scale(
  df,
  scale_items,
  scale_name,
  print_hist = T,
  scale_title = scale_name,
  reversed = NULL,
  r_key = NULL
)

Arguments

`df`	A srvyr survey object
`scale_items`	A characters vector containing the items for that scale (variables in df)
`scale_name`	Character. The name of the variable the scale should be saved as
`print_hist`	Logical. Should histograms of the scale and its items be printed.
`scale_title`	Character. Name of scale for printing. Defaults to scale_name
`reversed`	(optional) A characters vector containing the items that should be reverse-coded ( subset of scale_items)
`r_key`	(optional) Numeric. Set to the possible maximum value of the scale if the whole scale should be reversed, or to -1 to reverse the scale based on the observed maximum