Table 1.

Characteristics of the study group – HLA-B27-associated AU vs. HLA-B27-negative CTRL

Feature	Patients (n = 20)	Controls (n = 21)	p-value
Male/Female (n)	11/10	11/11	> 0.9999a
Mean Age (years)	M = 44.5, SD = 16.3	M = 42.1, SD = 14.9	0.6268b
BMI (kg/m2)	M = 25.4, SD = 5.2	M = 22.4, SD = 2.8	0.0305b

Data show mean and SD (standard deviation); BMI (body mass index); CTRL (control group)

^aFisher’s exact test. ^bWelch’s t-test