The Juvenile Arthritis Functional Status Index (JASI): a validation study.

Objective: To evaluate aspects of reliability and validity of the Juvenile Arthritis Functional Status Index (JASI). We developed this questionnaire to assess a variety of daily living and functional mobility tasks in children with juvenile rheumatoid arthritis (JRA). JASI part I consists of 100 functional items divided into 5 activity categories (self-care, domestic, mobility, school, extracurricular).

Development of a self-report functional status index for juvenile rheumatoid arthritis.

Objective: There are few functional indices available for juvenile rheumatoid arthritis (JRA). Our goal was to develop a reliable, valid and responsive self-report physical functional status index for individuals with JRA, ages 8-18 years.

Methods: Activity (item) generation by interview of children, parents, teachers, clinicians yielded 280 items.