Morning stiffness duration is associated with physician active joint count in juvenile idiopathic arthritis
Authors' conclusion
Our findings show the association between active arthritis and the duration of morning stiffness in JIA patients.
Study context
- Population
- Children with Juvenile Idiopathic Arthritis (JIA), Wilhelmina Children’s Hospital, December 2012–August 20245,421 Juvenile Arthritis Multidimensional Assessment Report (JAMAR) questionnaires
- Participants
- 803 children
- Outcome
- Association between morning stiffness duration (JAMAR) and active arthritis (physician AJC ≥ 1)
Methodological detailssingle-centre, observational
- Single-centre
- Observational
Main finding
As reported in the abstract
Association between morning stiffness duration and AJC
- Statistically significant association between morning stiffness duration and Active Joint Count (AJC)
- p < 0.001
Observational data: associations, not effects.
Further findings
Diagnostic model: morning stiffness cut-offs to predict active arthritis
- Sensitivity range
- 0.545 - 0.062
- Specificity range
- 0.755 to 0.990
Original publication
Morning stiffness duration is associated with physician active joint count in juvenile idiopathic arthritis. Pediatr Rheumatol Online J. Published 24 April 2026. doi:10.
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