Demographic characteristics, diagnosis, performed analysis, therapy and HLA genotype of all study participants.

Odds ratio (OR) for disease development was calculated according to presence of HLA-B27 allele, HLA-B7 allele, or both, HLA-B27 and B7 alleles in a cohort of 74 children from Croatia diagnosed with jSpA/ErA. [7]. It show us that odds for disease development are 2.61 times higher in children with HLA-B7 allele, 5.69 times higher in children with HLA-B27 allele and even 14.82 times higher in children with both HLA-B7 and HLA-B27 alleles than in children from general population without this allele.
1Non-steroidal anti-inflammatory drugs.
2Disease-modifying antirheumatic drugs.
3Glucocorticoids.
Demographic characteristics, diagnosis, performed analysis, therapy and HLA genotype of all study participants.