Spondyloarthritis & psoriatic arthritis
Validity and reliability of the Danish and Swedish versions of the Bristol Rheumatoid Arthritis Fatigue Questionnaires in patients with spondyloarthritis
Authors' conclusion
Good content validity, acceptable construct validity, good reliability, and low degree of measurement error were found for BRAF-MDQ and BRAF-NRS V2.
Study context
- Population
- Patients with spondyloarthritis (SpA) identified in the national rheumatology databases of Denmark and Sweden125/171 completed T2
- Participants
- 234 vs 183
- Comparison
- Denmark vs Sweden
- Denmarkn = 234
- Swedenn = 183
- Outcome
- Validity, reliability and interpretability of the Danish and Swedish BRAF-MDQ and BRAF-NRS V2
Methodological detailsmeasurement properties, online survey, test–retest, Denmark and Sweden
- Measurement properties
- Online survey
- Test–retest
- Denmark and Sweden
Performance
As reported in the abstract
Measurement properties of the BRAFs (Denmark/Sweden)
| Test or model | Cronbach's α, Bristol Rheumatoid Arthritis Fatigue Multi-Dimensional Questionnaire (BRAF-MDQ) | Cronbach's α, four subscales | ICC, BRAF-MDQ | ICC, subscales | ICC, three BRAF-NRS scales |
|---|---|---|---|---|---|
| Denmark | 0.94 | 0.79-0.93 | 0.96 | 0.84-0.93 | 0.70-0.90 |
| Sweden | 0.95 | 0.76-0.94 | 0.93 | 0.86-0.90 | 0.71-0.89 |
Cronbach's α, Bristol Rheumatoid Arthritis Fatigue Multi-Dimensional Questionnaire (BRAF-MDQ)
Denmark0.94
Sweden0.95
Cronbach's α, four subscales
Denmark0.79-0.93
Sweden0.76-0.94
ICC, BRAF-MDQ
Denmark0.96
Sweden0.93
ICC, subscales
Denmark0.84-0.93
Sweden0.86-0.90
ICC, three BRAF-NRS scales
Denmark0.70-0.90
Sweden0.71-0.89
- Structural validity of BRAF-MDQ: explanatory factor analysis identified five factors
- five
- Construct validity: hypotheses fulfilled for the BRAFs
- 80%
Original publication
Validity and reliability of the Danish and Swedish versions of the Bristol Rheumatoid Arthritis Fatigue Questionnaires in patients with spondyloarthritis. Scand J Rheumatol. Published 8 October 2025. doi:10.
Composed by AI from the published abstract and checked against it. How Briefs are made →