Pediatric rheumatology

Relationship of regional ultraviolet index data with rash and systemic disease activity in youth with childhood-onset systemic lupus: results from the Childhood Arthritis and Rheumatology Research Alliance Registry

Pediatr Rheumatol Online JPublished Retrospective cohort study

Authors' conclusion

This study found no association between UVI and rash or UVI and disease activity.

Study context

Population
Youth with childhood-onset SLE (cSLE) in the Childhood Arthritis and Rheumatology Research Alliance (CARRA) Registry with visits between 2010 and 2019mean 2.3 visits per participant
Participants
1,222 participants
Exposure
Regional UVI and season during the month of visit and one month prior
Outcome
Odds of rash and of severe SLEDAI-2K score (≥ 5 vs. 0-4)
Methodological detailsregistry-based, mixed-effects logistic regression, adjusted for age, sex, race and income
  • Registry-based
  • Mixed-effects logistic regression
  • Adjusted for age, sex, race and income

Main finding

As reported in the abstract

Association of UVI with rash and systemic disease activity
  • No associations between UVI during the month prior to visit or the month of visit and odds of rash or elevated systemic activity

Observational data: associations, not effects.

Further findings

OutcomeORP value
Fall season and rashNot associated with increased disease activity1.59P = 0.04

Visits with rash

Visits with rash
437 visits (15%)
Visits with SLEDAI-2K score ≥ 5
860 (30%)

Original publication

Relationship of regional ultraviolet index data with rash and systemic disease activity in youth with childhood-onset systemic lupus: results from the Childhood Arthritis and Rheumatology Research Alliance Registry. Pediatr Rheumatol Online J. Published 15 May 2024. doi:10.1186/s12969-024-00973-5

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