Table 1

 Patients’ characteristics

Number of patients is shown unless indicated otherwise.
BASDAI, Bath Ankylosing Spondylitis Disease Activity Index; CRP, C reactive protein; IBD, inflammatory bowel disease,
Number of patients20
Male/female14/6
Age (years), mean (range)42 (19–65)
Disease duration (years), mean (range)14 (1–38)
BASDAI, mean (range)5.0 (3.2–7.4)
HLA-B27 positive/negative17/3
CRP >10 mg/l11
Peripheral joint involvement10
History of uveitis5
Enthesitis9
Psoriasis7
Psoriasis and peripheral arthritis4
IBD0
Spinal pain (BASDAI question 2) >417