scDIFtest

0.1.1

Item-Wise Score-Based DIF Detection

1packages depend

2.5Kdownloads / year

–test coverage

13/13checks pass

Overview

About

Maintained by Dries DebeerFirst published 2020-06-262 releasesCRAN page ↗

Detection of item-wise Differential Item Functioning (DIF) in fitted 'mirt', 'multipleGroup' or 'bfactor' models using score-based structural change tests. Under the hood the sctest() function from the 'strucchange' package is used.

Install

R (CRAN)Ubuntu (r2u)Fedora (COPR)openSUSE (OBS)

install.packages("scDIFtest")

Installs the current CRAN release. Prebuilt binaries on Windows and macOS.

Release

# one-time r2u setup for Ubuntu (noble)

curl -fsSL https://raw.githubusercontent.com/eddelbuettel/r2u/master/inst/scripts/add_cranapt_noble.sh | sudo bash

# then install

sudo apt install r-cran-scdiftest

Fast Ubuntu binaries via r2u (no compilation). Run the setup once per machine.

bspm (used by r2u) also needs make: sudo apt install make

sudo dnf copr enable iucar/cran

sudo dnf install R-CRAN-scDIFtest

RPMs from the iucar/cran COPR, rebuilt from CRAN.

sudo zypper install R-scDIFtest

RPMs auto-built from CRAN on openSUSE OBS.

Health

CRAN checks

13OK

Code health

Yes

Tests · ratio 0.32

not tracked

Coverage

100%

Documentation · exports

Yes

Vignettes

README

Dependencies · direct

Check history

OK2026-06-08
13 OK · 0 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE
ERROR2026-06-07
12 OK · 0 NOTE · 0 WARNING · 1 ERROR · 0 FAILURE
OK2026-05-02
13 OK · 0 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE
ERROR2026-04-25
11 OK · 0 NOTE · 0 WARNING · 1 ERROR · 0 FAILURE
NOTE2026-03-10
11 OK · 3 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE

Downloads

2.5K

CRAN downloads in the past year

Rank #17,986 · ~7/day · ~204/mo

scDIFtest Releases R versions

Daily download trend is not available in this view yet.

29230 days

64990 days

2.5K1 year

Compare downloads with other packages →

Also on96 r2u6 autocran

Dependencies

Declared dependencies

9 external dependencies (excludes base and recommended)

Depends (0)

none

Imports (4)

sandwich strucchange mirt zoo

LinkingTo (0)

none

Suggests (5)

mvtnorm psychotree knitr rmarkdown testthat

Enhances (0)

none

Reverse dependencies

1direct

–indirect (not tracked)

mstDIF

Code & Tests

Code Composition

R 579 (55%)Vignettes 224 (21%)Rd 166 (16%)Other 83 (8%)

Test coverage

Line coverage

–

Expression

–

Tests / Examples

–

Functions

5 1 exported

Complexity

6.2 avg / 12 max

Call network

5 nodes / 1 edges

Test coverage has not been measured for this package yet; nodes fall back to a neutral fill.

Call graph

Open call graph →

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Lowest coverage

Per-function coverage is not measured for this package yet.

People & History

People (1)

Maintainer (1)

Dries Debeer

Maintainer, Author

Authors (1)

Dries Debeer

Maintainer, Author

Release timeline

2 releases. Pick two to compare their code metrics. R releases are shown for context.

R
R 4.6.0 released · 2026-04-24
R
R 4.5.0 released · 2025-04-11
R
R 4.4.0 released · 2024-04-24
R
R 4.3.0 released · 2023-04-21
R
R 4.2.0 released · 2022-04-22
R
R 4.1.0 released · 2021-05-18
0.1.1Latest
2020-07-02 · current release · diff ↗
0.1.0
2020-06-26
R
R 4.0.0 released · 2020-04-24

Package metadata

First published: 2020-06-26
Total releases: 2 / 6 yrs
License: GPL-3 OSI
Download size: not tracked yet
Installed size: not tracked yet
With dependencies: not tracked yet