CRP and polyarticular arthritis: No statistically significant correlations were found for age, gender, JIA category (except polyarthritis), disease duration, CRP/ESR, treatment with conventional synthetic disease modifying antirheumatic drug (csDMARD)/biologics, glucocorticoid intake, number of previous therapies, number of active/movement-impaired joints, therapy duration, frequency of treatment application and concomitant somatic diseases (Table 1).