Table 1

 Demographic and clinical characteristics of patients with ankylosing spondylitis (n  =  113)

Characteristics
*Mean (SD; range), †median (interquartile range).
Age, years*52.6 (12.5; 19 to 79)
Age at first complaints, years†23.0 (19.0 to 31.5)
Age at actual diagnosis, years†34.0 (25.0 to 42.5)
Years between first complaints and diagnosis†7.0 (2.0 to 12.5)
Women12.5%
HLA-B27 positive98%
Iridocyclitis40%
Peripheral arthritis37%
First degree relatives with AS28%