Age (years)
|
35 ± 9
|
32 ± 11
|
0.245
|
Male sex
|
75 (75)
|
16 (84)
|
0.558
|
BMI (kg/m2)
|
23.1 ± 3.2
|
23.5 ± 4.2
|
0.671
|
Current smoking
|
30 (30)
|
6 (32)
|
1.000
|
Alcohol ≥ 3 units/day
|
3 (3)
|
0 (0)
|
1.000
|
Symptom duration (years)
|
8 ± 7
|
9 ± 8
|
0.615
|
Family history of axSpA
|
10 (10)
|
2 (11)
|
1.000
|
HLA B27-positive
|
92 (92)
|
18 (95)
|
1.000
|
Peripheral arthritis
|
24 (24)
|
3 (16)
|
0.559
|
Radiographic sacroiliitis
|
73 (73)
|
17 (90)
|
0.154
|
BASDAI score (range, 0–10)
|
3.9 ± 2.2
|
3.8 ± 2.0
|
0.849
|
BASFI score
|
1.7 ± 2.1
|
1.9 ± 2.0
|
0.672
|
ESR (mm/h)
|
21 ± 20
|
32 ± 18
|
0.019
|
CRP (mg/L)
|
7.4 ± 13.4
|
18.0 ± 19.2
|
0.032
|
ASDAS-ESR
|
2.5 ± 1.2
|
2.9 ± 1.0
|
0.169
|
ASDAS-CRP
|
2.1 ± 1.3
|
2.7 ± 1.2
|
0.051
|
mSASSS
|
7 ± 14
|
11 ± 16
|
0.215
|
Number of syndesmophytes
|
2.1 ± 4.7
|
3.1 ± 5.6
|
0.430
|
Presence of syndesmophytes
|
28 (28)
|
6 (32)
|
0.785
|
Patients on NSAIDs
|
88 (88)
|
18 (95)
|
0.690
|
Patients on sulfasalazine
|
33 (33)
|
9 (47)
|
0.296
|
Patients on TNF inhibitors
|
28 (28)
|
8 (42)
|
0.227
|
Patients on bisphosphonate
|
0 (0)
|
2 (11)
|
0.024
|
Patients on calcium
|
10 (10)
|
7 (37)
|
0.006
|
Patients on vitamin D
|
10 (10)
|
8 (42)
|
0.002
|