Patient-reported joint count in juvenile idiopathic arthritis: the reliability of a manikin format.

Objective: To evaluate the reliability of a manikin format, patient-reported joint count in juvenile idiopathic arthritis (JIA), and to detect changes in agreement at a second visit.

Methods: Patients with JIA aged 12-21 were asked to mark joints with active arthritis on a manikin before their regular clinic visit. The physician then performed a joint count without having seen the patient's assessment.