Systemic sclerosis & Raynaud's
Differential Item Functioning on the Cochin Hand Function Scale Among People With Systemic Sclerosis by Language, Sex, and Disease Subtype: A Scleroderma Patient‐Centered Intervention Network (SPIN) Cohort Study
Authors' conclusion
The CHFS has score comparability in systemic sclerosis regardless of participants' language, sex, and disease subtype.
Study context
- Population
- SPIN Cohort participants with SSc who completed the Cochin Hand Function Scale (CHFS) at baseline, April 2014 to September 2020
- Participants
- 2,155 participants
- Outcome
- Score comparability of the CHFS across language, sex and disease subtype (DIF)
- Follow-up
- Baseline
Methodological detailsmeasurement invariance / differential item functioning analysis, confirmatory factor analysis, multiple indicator multiple cause (MIMIC) models, baseline assessment
- Measurement invariance / differential item functioning analysis
- Confirmatory factor analysis
- MIMIC models
- Baseline assessment
Main finding
As reported in the abstract
Impact of DIF on CHFS factor scores (unadjusted vs DIF-adjusted)
- Items with significant differential item functioning (DIF) for language of administration
- 9
- Items with significant DIF for sex
- 10
- Items with significant DIF for disease subtype
- 10
- Overall DIF impact negligible: Intraclass correlation coefficient (ICC)
- 0.999
- Overall DIF impact negligible: r
- 0.999
Observational data: associations, not effects.
Further findings
Confirmatory factor analysis (CFA) model fit (with covarying error terms)
- χ2[127]
- 1,754.671
- P
- P < 0.001
- Tucker-Lewis index
- 0.985
- Comparative fit index
- 0.987
- Root mean square error of approximation
- 0.077
- Supported a good fit of the model
Original publication
Differential Item Functioning on the Cochin Hand Function Scale Among People With Systemic Sclerosis by Language, Sex, and Disease Subtype: A Scleroderma Patient‐Centered Intervention Network (SPIN) Cohort Study. Arthritis Care Res (Hoboken). Published 20 November 2023. doi:10.
Composed by AI from the published abstract and checked against it. How Briefs are made →