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irtpwr  

Power Analysis for IRT Models Using the Wald, LR, Score, and Gradient Statistics
View on CRAN: Click here


Download and install irtpwr package within the R console
Install from CRAN:
install.packages("irtpwr")

Install from Github:
library("remotes")
install_github("cran/irtpwr")

Install by package version:
library("remotes")
install_version("irtpwr", "1.0.3")



Attach the package and use:
library("irtpwr")
Maintained by
Felix Zimmer
[Scholar Profile | Author Map]
All associated links for this package
First Published: 2022-11-16
Latest Update: 2023-11-20
Description:
Implementation of analytical and sampling-based power analyses for the Wald, likelihood ratio (LR), score, and gradient tests. Can be applied to item response theory (IRT) models that are fitted using marginal maximum likelihood estimation. The methods are described in our paper (Zimmer et al. (2022) ).
How to cite:
Felix Zimmer (2022). irtpwr: Power Analysis for IRT Models Using the Wald, LR, Score, and Gradient Statistics. R package version 1.0.3, https://cran.r-project.org/web/packages/irtpwr. Accessed 18 Sep. 2026.
Previous versions and publish date:
(2026-07-09 07:50), 1.0.0 (2022-11-16 16:00), 1.0.1 (2023-09-08 12:10), 1.0.2 (2023-09-29 10:50)
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Complete documentation for irtpwr
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