Table 2: Clinical features of the Ankylosing spondylitis and other Spondyloarthropathy patients.

Clinical Characteristics AS
Frequency(%) 		Other SpA
Frequency(%) 		P value †
Cohort Size 88 53 -
Inflammatory back pain 80(94) 28(53) <0.001
Peripheral arthritis 54(61) 53(100) <0.001
Enthesitis 14(16) 28(53) <0.001
Uveitis 16(18) 6(11) 0.017
Psoriasis 3(3) 6(11) 0.08
IBD 2(2) 2(4) >0.1
Last BASDAI (out of 10)* 3.37 - -
Last Schoebers (cm)* 4.98 - -
Sacroiliitis bilateral ∆ 70/80(88) 14/33(42) <0.001
Sacroiliitis unilateral ∆ 7/80(9) 4/33(12) >0.1
Bamboo spine 9(17) 0(0) 0.014

†Comparisons were performed using Fischer’s exact test *Mean Last clinic consultation BASDAI and Shoebers analysed ∆ Sacroiliitis on MRI prevalent in 93% and 36% of AS and SpA patients respectively. AS, Ankylosing Spondylitis; Other SpA, Other Spondyloarthropathies; IBD, Inflammatory Bowel Disease; BASDAI, Bath Ankylosing Spondylitis Disease Activity Index