Consolaro et al developed 3 Juvenile Arthritis Activity Scores (JADAS) with different numbers of joints counted. The simplest version was the JADAS-10 which had 4 items. This was used as the basis for a 3 item cJADAS10. The authors are from multiple institutions in Italy.
Patient selection: juvenile arthritis
The 3 item cJADAS10 is based on the 4 item JADAS10, with removal of the ESR.
Parameters:
(1) number of joints affected, up to a maximum of 10
(2) physician assessment on a 10 cm VAS scale
(3) patient assessment on a 10 cm VAS scale
points for joints affected =
= MIN(10, (number of joints affected)
The minimum cJADAS10 was 0 and the maximum 30.
If 1 to 4 joints are affected then the designation is oligoarthritis.
If 5 or more joints are affected then the designation is polyarthritis.
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Disease Activity
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Designation
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Criteria
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inactive
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ID
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no joints with active disease; no systemic manifestations attributable to JIA; no active uveitis; normal concentrations of acute phase reactants; physician global VAS 0 cm; duration of morning stiffness less than 15 minutes
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minimal or low
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LDA
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For polyarthritis: physician's global VAS <= 3.5 cm; parent's or patient's global VAS <= 2.5 cm; swollen joint count <= 1. For oligoarthritis: physician's global VAS <= 2.5 cm; swollen joint count 0.
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moderate activity
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MDA
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not ID, LDA or HDA
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high activity
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HDA
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therapy as listed see below
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Therapy for HDA
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Oligoarthritis (one or more)
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Polyarthritis (one or more)
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intra-articular injection corticosteroids
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>= 1 joint
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>= 3 joints
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DMARD
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start
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start
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biological agent
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start
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start
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systemic steroids
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NA
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start
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Disease Activity
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Oligoarthritis
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Polyarthritis
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ID
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cJADAS10 <= 1
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cJADAS10 <= 1
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LDA
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cJADAS10 <= 1.5
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cJADAS10 <= 2.5
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MDA
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cJADAS10 1.51 to 4.00
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cJADAS10 2.51 to 8.50
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HDA
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cJADAS10 > 4.00
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cJADAS10 > 8.50
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where:
• For oligoarthritis ID and LDA the joint count should be 0. For polyarthritis LDA the joint count should be 0 or 1.
