Modified Juvenile Spondyloarthritis Disease Activity Index in the Childhood Arthritis and Rheumatology Research Alliance (CARRA) Registry
Authors' conclusion
We propose the term modified JSpADA for the modification of JSpADA with 6 elements (JSpADA6-no Schober, no CRP/ESR).
Study context
- Population
- North American patients with enthesitis-related arthritis (ERA), CARRA Registry; mean age 13.7 years, disease duration 30.9 months
- Participants
- 51 patients64 visits
- Comparison
- JSpADA vs modified versions
- Outcome
- Correlation (r) with cJADAS10, PGA and CHAQ
Methodological detailsregistry-based, OMERACT principles: face validity, discriminative validity, responsiveness to change
- Registry-based
- OMERACT principles: face validity, discriminative validity, responsiveness to change
Performance
As reported in the abstract
| Test or model | R with cJADAS10 | R with physician global assessment (PGA) | R with CHAQ |
|---|---|---|---|
| JSpADA | 0.81 | 0.69 | 0.22 |
| JSpADA7-no Schober | 0.81 | 0.65 | 0.35 |
| JSpADA7-no CRP/ESR | 0.79 | 0.67 | 0.34 |
| JSpADA6-no Schober, no CRP/ESR | 0.80 | 0.64 | 0.39 |
R with cJADAS10
JSpADA0.81
JSpADA7-no Schober0.81
JSpADA7-no CRP/ESR0.79
JSpADA6-no Schober, no CRP/ESR0.80
R with physician global assessment (PGA)
JSpADA0.69
JSpADA7-no Schober0.65
JSpADA7-no CRP/ESR0.67
JSpADA6-no Schober, no CRP/ESR0.64
R with CHAQ
JSpADA0.22
JSpADA7-no Schober0.35
JSpADA7-no CRP/ESR0.34
JSpADA6-no Schober, no CRP/ESR0.39
Original publication
Modified Juvenile Spondyloarthritis Disease Activity Index in the Childhood Arthritis and Rheumatology Research Alliance (CARRA) Registry. J Rheumatol. Published 1 November 2022. doi:10.
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