Minimal Important Change and Threshold Estimation
Overview
Provides methods for estimating minimal important change (MIC) and interpretation thresholds for multi-item questionnaires and single-item continuous or ordinal measures. Methods include predictive modelling, adjusted predictive modelling, improved adjusted predictive modelling using anchor reliability, confirmatory factor analysis for anchor reliability, longitudinal confirmatory factor analysis for MIC estimation, longitudinal confirmatory factor analysis-based MIC estimation for single-item measures, and confirmatory factor analysis-based threshold estimation for single-item and multi-item measures. Implemented methods include those developed by Terluin et al. (2015) doi:10.1016/j.jclinepi.2015.03.015, Terluin et al. (2017) doi:10.1016/j.jclinepi.2016.12.015, Terluin et al. (2022) doi:10.1016/j.jclinepi.2022.04.018, Terluin et al. (2023) doi:10.1007/s11136-023-03355-8, Terluin et al. (2024) doi:10.1007/s11136-023-03577-w, Terluin et al. (2024) doi:10.1007/s11136-024-03763-4, and Terluin et al. (2026) doi:10.1007/s11136-025-04134-3.
Package history
MiCT is the renamed and substantially extended successor to the original
MIC package created by Iris Eekhout. Version 2.0.0 reflects the package rename and major
methodological updates.
Major changes
- Added
sim_threshold()for LCFA-based threshold estimation for single-item measures. - Added
mim_threshold()for LCFA-based threshold estimation for multi-item questionnaires. - Added
sim_mic_lcfa()for LCFA-based MIC estimation for single-item measures. - Updated
mic_lcfa()with CFA/probit expected-score mapping - Added
equalize_levels(),var_discretize()andlcfa_model() - Renamed
simdat()outputempirical_rel_trttoobserved_rel_trt. - Updated documentation, examples, and tests.
From NEWS.md in the release
Install
Health
- OK13 OK2026-09-08
- ERROR12 OK, 1 ERROR2026-09-07
- OK13 OK2026-08-22
- ERROR3 OK, 4 ERROR2026-08-10
Documentation
- Help pages
- 17
- Examples that run
- 87%13 run in a plain check · 2 only when donttest examples are enabled (R CMD check --as-cran)
- Exported functions with examples
- 93%
- Documented parameters
- 100%
- Return-value docs
- 100%
- Help pages citing references
- 35%
Downloads
Repository
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GitHub Pages site last deployed 2026-08-04 · The repository has a site deploy workflow
pkgdown site last built 2026-08-04, before release 2.0.0 (2026-08-09)
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Dependencies
Installing MiCT adds 70 packages (35 with compiled code, 30 MB of source tarballs). Heaviest: SimDesign 2.4 MB, Rcpp 1.8 MB, GPArotation 1.6 MB.
Code & Tests
Datasets
People & History
- 2.0.0Latest2026-08-09 · current release
- RR 4.6.0 released · 2026-04-24
Package metadata
- First published
- 2026-08-09
- Total releases
- 1 / 1 yrs
- License
- MIT + file LICENSE OSI
- Minimum R
- ≥ 4.1.0
- Bundled data
- 11 KB / 1 file
- Download size
- 625 KB
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