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Table 2 Characteristics of the study cohort

From: Anti-SIRT1 autoantibody is elevated in ankylosing spondylitis: a potential disease biomarker

Variable AS RA PsA HC
Number 185 94 12 87
Age (years) (median) 15–70 (34.6) 14–54 (41.1) 31–62 (45.1) 20–50 (35.2)
Gender ratio (male: female) 139:46 12:82 10:2 66:21
Disease duration (years) 7.4 (0.04–31)
Positive for HLA-B27 94.3%
Hips joint involvement (n, %) 57 (30.8%) 0 0
ESR (mm/h) (median) 31.6 ± 42.3 31.2 ± 25.7 32.6 ± 25.9