Table 1: Clinical and laboratory features seen in our Spondyloarthropathy cohort.

Feature AS Other SpA
Cohort Size 88 53
Male Proportion 71 (80.7%) 29 (54.7%)
Mean age at Symptom onset(SD) 28.4 (9.8) 33.88 (11.8)
Mean age at Diagnosis(SD) 31.9 (9.7) 37.85 (10.1)
Smoking Status
• Never 52/76 (68.4%) 42/49 (85.7%)
• Former 4/76 (5.3%) 1/49 (2.04%)
• Current 20/76 (26.3%) 6/49 (12.3%)
HLA-B27 Positivity 58/77 (75.3%) 10/28 (35.7%)
Ethnicity
• Indian Subcontinent 40(46.6%) 18 (34%)
• Arab 21 (23.9%) 22 (41.5%)
• Caucasian 17 (19.3%) 12 (22.6%)
• Afro Caribbean 1 (1.1%) 1 (1.9%)
• Eastern European 4 (4.5%) 0 (0%)
• East Asian 3(3.4%) 0 (0%)

AS, Ankylosing Spondylitis; Other SpA, Other Spondyloarthropathies; SD, Standard Deviation; HLA, Human Leucocyte Antigen