Juvenile Idiopathic Arthritis in Children in Estonia.

Juvenile Idiopathic Arthritis in Children in Estonia - an Epidemiological and Clinical Investigation.


Lead Sponsor: University of Tartu

Source University of Tartu
Brief Summary

Aims of the study: - to study the incidence rate of juvenile idiopathic arthritis (JIA) and it's clinical subtypes in Estonia for the years 1998-2000; - to examine the course and short-term clinical outcome of JIA. Method: a prospective population-based study carried on in 14 counties of Estonia

Overall Status Completed
Start Date 1998-01-01
Completion Date 2002-12-01
Primary Completion Date 2000-12-01
Study Type Observational
Primary Outcome
Measure Time Frame
Mean annual incidence rate of juvenile idiopathic arthritis in Estonia during years 1998-2000. 3 years
Enrollment 162

Intervention Type: Other

Intervention Name: Blood collecting for storage of samples

Arm Group Label: Subsequent new juvenile arthritis cases


Sampling Method:

Probability Sample


Inclusion Criteria: - The International League of Associations for Rheumatology (ILAR) criteria for juvenile idiopathic arthritis - children aged 0-15 years who had arthritis of an unknown cause for at least six weeks with an onset of the disease during the study period Exclusion Criteria: - Children with infectious arthritis, postinfectious arthritis, traumatic arthritis and systemic connective tissue diseases



Minimum Age:

1 Month

Maximum Age:

15 Years

Healthy Volunteers:


Verification Date


Responsible Party

Type: Principal Investigator

Investigator Affiliation: University of Tartu

Investigator Full Name: Chris Pruunsild

Investigator Title: MD, PhD

Has Expanded Access No
Condition Browse
Arm Group

Label: Subsequent new juvenile arthritis cases

Description: During years 1998-2000, all new subsequent cases of juvenile idiopathic arthritis diagnosed in Estonia were included in the study group.

Study Design Info

Observational Model: Ecologic or Community

Time Perspective: Prospective

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