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Table 4. Comparison of the characteristics of patients fulfilling (+) and not fulfilling (-) each criteria set.
Characteristic
Male gender, N (%) Age, (years)
Age at first symptom (years)
Symptom duration (years)
Chronic back pain, N (%)
IBP, N (%)
Buttock pain, N (%)
Asymmetric oligoarthritis, N (%)
Enthesitis, N (%)
Dactylitis, N (%)
Pos family history, N (%)
Preceding Infection, N (%)
Uveitis, N (%) Psoriasis, N (%) IBD, N (%)
HLA-B27 positive, N (%)
CRP (mg/dl)
ESR (mm/hr) Sacroiliitis X-ray, N (%)
Sacroiliitis MRI, N (%)
ASAS SpA ESSG Amor
(+) (-) p (+) (-) p (+) (-) p
343 (73.3) 35.4±13.7
28±10.9
7.6±9.9
369 (78.9) 227 (48.5) 146 (31.2)
353 (75.2) 287 (61.3) 76 (16.2) 28 (6) 175 (37.4) 31 (6.6) 9 (1.9)
3 (0.6)
191 (51.3)
10.4±34.9
25.9±17.5 158 (53.7)
69 (58.5)
74 (65.5) 33.5±12.8
27.9±9.2
6.0±8.9
70 (62) 31 (27.4) 26 (23)
67 (59.3) 45 (39.8) 8 (7.1) 3 (2.7) 35 (31) 4 (3.5) 18 (15.9) 2 (1.7)
3 (4.5)
16.5±34.8
22.4±18.2 0 (0)
0 (0)
0.098 0.256
0.887 0.188
<0.001 <0.001 0.087
<0.001 <0.001 0.013 0.158 0.202 0.216 0.281 0.451
<0.001
0.342
0.159 -
-
297 (68.9) 35.8±13.5
28.3±10.7
7.6±9.8
335 (77.7) 202 (46.9) 144 (33.4)
306 (71.0) 266 (61.7) 68 (15.8) 27 (6.3) 149 (34.6) 25 (5.8) 16 (3.7) 5 (1.1)
143 (43.3)
9.2±2.7
24.4±17.2 121 (46)
54 (50)
120 (80) 32.5±13.4
26.9±10.4
6.4±9.3
104 (69.3) 56 (37.3) 28 (18.7)
113 (75.3) 66 (44) 16 (10.7) 4 (2.7) 61 (40.7) 10 (6.7) 11 (7.3) 0 (0)
51 (46)
19.1±6.6
27±19 37 (45.1)
15 (51.7)
<0.001 0.030
0.220 0.319
0.039
0.043 <0.001
0.308
<0.001
0.125 0.091 0.181 0.701 0.07 0.185
0.631
0.100
0.256 0.888
0.869
208 (67.3) 36.1±13.3
28.8±11.1
7.5±9.3
254 (82.2) 141 (45.6) 112 (36.3)
222 (71.8) 211 (68.3) 55 (17.8) 20 (6.5) 104 (33.7) 24 (7.8) 13 (4.2) 4 (1.2)
112 (46.3)
9.4±3.6
22.7±16 27.3±18.9
0.011
0.051 0.051
0.653
<0.001
0.527
<0.001
0.876
<0.001
0.015 0.194 0.183 0.060 0.591 0.227
0.285 0.345
0.025
0.076 0.936
97 (50) 37 (50.7)
61 (40.4) 32 (50)
209 (76.8) 33.6±13.7
26.8±9.8
7.1±10.4
185 (68) 117 (43) 60 (22.1)
197 (72.4) 121 (44.5) 29 (10.7) 11 (4) 106 (39) 11 (4) 14 (5.1) 1 (0.3)
82 (41.2)
14.3±3.8
Continuous variables were compared by t-test and categorical variables were compared by Chi-square test Values are given as the means (SD) for the continuous variables as a percentages for the categorical variables, unless otherwise specified.
AS, ankylosing spondylitis; uSpA, undifferentiated spondyloarthritis; ReA, reactive arthritis; PsA, psoriatic arthritis; IBD, SpA associated with inflammatory bowel disease; CRP, C-reactive protein; ESR, erythrocyte sedimentation rate; MRI, magnetic resonance imaging; BASFI, Bath Ankylosing Spondylitis Functional Index; BASDAI, Bath Ankylosing Spondylitis Disease Activity Index; IBP, inflammatory back pain; ASDAS, Ankylosing Spondylitis Disease Activity Score.
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