Table 1 Demographic characteristics of enrolled patients with AS and healthy controls

Age, years

37.9 ± 13.5

39.3 ± 13.2

0.511

Gender, male

42 (70.0)

34 (75.6)

0.527

Disease duration, years

8 (3, 17)

-

-

HLA-B27 positivity

58 (96.7)

-

-

mSASSS (0–72)

2 (0, 9)

-

-

Sacroiliitis grade (0–4)

3 (2, 3)

-

-

ESR, mm/h

23.3 ± 17.9

-

-

CRP, mg/dl

0.9 (0.2, 2.1)

-

-

BASDAI (0–10)

4.5 ± 2.2

-

-

BASFI score (0–10)

2.4 ± 2.4

-

-

BAS-G score (0–10)

4.5 ± 2.5

-

-

Biologic used

11 (18.3%)

-

-