rasch_transform: Compute Rasch transformation for PROactive scores

In activAnalyzer: A 'Shiny' App to Analyze Accelerometer-Measured Daily Physical Behavior Data

Compute Rasch transformation for PROactive scores

Description

This function provides the 0-100 Rasch scaled score of a given C-PPAC or D-PPAC raw score (based on: Garcia-Aymerich J, et al. Thorax 2021;0:1–11. doi: 10.1136/thoraxjnl-2020-214554).

Usage

rasch_transform(
  x,
  quest = c("C-PPAC", "D-PPAC"),
  score = c("difficulty", "quantity")
)

Arguments

x	A numeric value that is the difficulty score (between 0 and 40 for C-PPAC or 0 and 20 for D-PPAC) or the quantity score (between 0 and 15 for C-PPAC or 0 and 17 for D-PPAC) obtained using a PROactive questionnaire.
quest	A character value to indicate with which PROactive questionnaire the raw score has been obtained.
score	A character value.

Value

A numeric value.

Examples

rasch_transform(33, quest = "C-PPAC", score = "difficulty")

activAnalyzer documentation built on Sept. 24, 2024, 1:07 a.m.