Table 3: Clinical and laboratory features of Ankylosing Spondylitis and other Spondyloarthropathy patients of the three major ethnicities.

– AS Patients Other SpA Patients
Arab Indian
Subcontinent 		Caucasian P value† Arab Indian
Subcontinent 		Caucasian P value†
Cohort size 21 40 17 - 12 18 22 -
Male (%) 20(95) 32(80) 12(71) - 8(67) 9(50) 12(55) -
Age in years at symptom onset (SD) 29.7 (9.4) 28.6 (10.2) 26.6 (8.7) 0.64 30.0 39.2 (11.7)
    (11.8)		 31.1 (10.6) 0.05
Delay to diagnosis in years(SD) 2.89 (3.4) 3.85 (6.0) 1.87 (2.5) 0.39 6.92 1.22 (2.6)
    (8.7)		 3.38 (7.0) 0.06
HLAB27
Positivity		 10/19(53%) 28/35(80%) 14/15(93%) 0.023 2/4(50%) 2/8(25%) 5/15(33%) 0.45

†Comparisons were performed using Fisher’s exact test or a One-way ANOVA test AS, Ankylosing Spondylitis; Other SpA, Other Spondyloarthropathies; SD, Standard Deviation; HLA, Human Leucocyte Antigen