Table 2 Pediatric core set criteria for improvement in juvenile idiopathic arthritis

1.

Physician's global assessment of overall disease activity

2.

Parent of patient global assessment of overall well-being

3.

Functional ability

4.

Number of joints with active arthritis

5.

Number of joints with limited range of motion

6.

Erythrocyte sedimentation rate

American College of Rheumatology Pediatric 30 response

A minimum of 30% improvement from baseline in a minimum of three out of six components, with a worsening by >30% in no more than one component

American College of Rheumatology Pediatric 50 response

Requires 50% improvement in three out of six components with worsening of 30% in no more than one component

American College of Rheumatology Pediatric 70 response

Requires 70% improvement in three out of six components with worsening of 30% in no more than one component