Juvenile psoriatic arthritis: longterm outcome and differentiation from other subtypes of juvenile idiopathic arthritis.

Objective: To compare outcomes in patients with juvenile psoriatic arthritis (PsA) with those in patients with other juvenile idiopathic arthritis (JIA) subtypes, and to evaluate characteristics and genetic markers that may differentiate PsA from other subtypes of JIA.

Methods: JIA patients first admitted between 1980 and 1985 were clinically examined after a median of 15 years. Health status was reassessed by the Short Form-36 Health Survey (SF-36) after a median of 23 years.

Long-term outcome and prognostic factors in enthesitis-related arthritis: a case-control study.

Objective: To compare the clinical, functional, and radiographic outcomes in patients with enthesitis-related arthritis (ERA) with those in patients with other subtypes of juvenile idiopathic arthritis (JIA) and healthy controls, and to determine genetic markers, patient characteristics, and early disease variables that predict the development of remission, sacroiliitis, and physical limitations in ERA.

Methods: Fifty-five children with ERA who were first admitted to Rikshospitalet Medical Center between 1980 and 1985 were studied. Patients with oligoarthritis or polyarthritis who were admitted during the same period (n = 55) and individuals from a national population registry (n = 55) were matched for sex and age and used as controls.

Radiographic and clinical outcome in early juvenile rheumatoid arthritis and juvenile spondyloarthropathy: a 3-year prospective study.

Objective: To describe radiographic findings at disease onset and 3-year followup in patients with juvenile rheumatoid arthritis (JRA) and juvenile spondyloarthropathy (JSpA), to assess radiographic progression and its predictors, and to prospectively assess clinical outcome and predictors of persistent disease at 3-year followup.

Methods: A total of 197 patients with JRA/JSpA were examined every 6 months for 3 years. Radiographic examination was performed at baseline and 3-year followup of knees and ankles (all patients) and of other joints on clinical indication.

Early disease course and predictors of disability in juvenile rheumatoid arthritis and juvenile spondyloarthropathy: a 3 year prospective study.

Objective: . To describe the 3 year disease course in early juvenile rheumatoid arthritis (JRA) and juvenile spondyloarthropathy (JSpA), to compare the health status after 3 years of followup with that of normal controls, and to investigate the relationship between physical function at followup and disease characteristics recorded during the first 6 months.

Methods: One hundred and ninety-seven children (median age 6:6 yrs) with JRA and JSpA and disease duration <1.

A two-year prospective controlled study of bone mass and bone turnover in children with early juvenile idiopathic arthritis.

Objective: To explore early changes and predictors of bone mass in children with juvenile idiopathic arthritis (JIA) in order to identify patients who will develop bone mass reductions.

Methods: We conducted a prospective cohort study of 108 children with early JIA (ages 6-18 years; mean disease duration 19.3 months) who were individually matched with 108 healthy children for age, sex, race, and county of residence.