Table 2. Correlation of clinical, laboratory, and core set variables with MRI parameters.

Characteristics	MRI synovial hypertrophy score	MRI cartilage lesion score	MRI bone erosion score	MRI bone marrow edema score
Duration of disease (year)	-0.199	0.078	0.198	0
Number of joints affected	0.448	-0.206	-0.366	0.104
Restriction of shoulder joint movement	0.115	0.256	-0.042	0.247
Duration of early morning stiffness	-0.119	-0.092	-0.343	-0.038
Visual Analog Scale	0.196	-0.443	-0.253	0.343
Physician global assessment of disease activity	0.218	-0.372	-0.153	0.265
Parent/patient assessment of overall wellbeing	0.149	-0.486	-0.296	0.357
JADAS 27	0.217	-0.429	-0.246	0.272
Erythrocyte sedimentation rate (mm/1st h)	0.110	-0.234	-0.002	-0.153
C-reactive protein (mg/L)	0.15	-0.034	-0.143	0.182
Disease activity as per Wallace criteria	1.000	1.000	0.117	0.587
MRI: Magnetic resonance imaging; JADAS: Juvenile Arthritis Disease Activity Score.