School Absence Among Children With Juvenile Idiopathic Arthritis: A National Matched Comparison Study
Authors' conclusion
Children with JIA had more sickness and legal absence from school.
Study context
- Population
- All children attending public Danish schools between 2010 and 2019 diagnosed with juvenile idiopathic arthritis (JIA), and their schoolmates; primary study: diagnosed after starting schoolmatched cohort
- Participants
- 786 vs 3,908
- Exposure
- Children with JIA vs matched schoolmates
- JIAn = 786
- Matched controlsn = 3,908reference
- Outcome
- Rates of differentiated and total school absence before and after JIA diagnosis
Methodological detailsregister-based, matched cohort, national
- Register-based
- Matched cohort
- National
Main finding
As reported in the abstract
School absence, primary study (JIA diagnosed after starting school)
- Higher rates of sickness school absence (SA) and total SA among children with JIA from 3 years before diagnosis and the following 5 years after diagnosis
- After diagnosis, children with JIA also had significantly more legal (planned) SA
- Matched cohort
Observational data: associations, not effects.
Further findings
School absence, secondary study (JIA diagnosed before starting school; 382 JIA vs 1910 matched controls) · up to grade 8
- Children with JIA had significantly more SA (both sickness SA and legal school SA) up to grade 8
School absence by socioeconomic status (SES) (both studies)
- Children from low SES backgrounds, with and without JIA, had the highest rates of SA; no difference in the JIA–SA association across SES groups
Original publication
School Absence Among Children With Juvenile Idiopathic Arthritis: A National Matched Comparison Study. J Rheumatol. Published 15 April 2025. doi:10.
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