Influence of TNF and IL17 Gene Polymorphisms on the Spondyloarthritis Immunopathogenesis, Regardless of HLA-B27, in a Brazilian Population

Table 2

Baseline characteristics of patients and healthy volunteers (controls).

	SpA ()	AS ()	PsA ()	Controls ()
Mean age (SD) years	47 (±15.7)	45 (±15.3)	51 (±16.1)	40 (±2.7)
Gender, males [n (%)]	109 (44.9)	81 (46.6)	28 (41.8)	92 (43.8)
Gender, females [n (%)]	134 (55.2)	93 (53.6)	39 (58.2)	118 (56.2)
HLA-B27 positive [n (%)]	89 (36.6)^a	71 (40.8)^b	18 (26.9)^c	32 (15.2)^a,b,c

SpA: spondyloarthritis; AS: ankylosing spondylitis; PsA: psoriatic arthritis. Statistical analysis was performed by chi-square distribution table using OpenEpi 3.01 software: , OR (95% CI) = 3.2 (2.0–5.0). , OR (95% CI) = 8.3 (5.1–13.4). , OR (95% CI) = 2.0 (1.1–4.0).