| |
Suspected early ankylosing spondylitis group (n = 10)
|
Confirmed ankylosing spondylitis group (n = 10)
|
|---|
|
Male : female
|
7 : 3
|
7 : 3
|
|
Age (years)
|
28.5 (21 – 45)
|
36.5 (30 – 48)
|
|
Disease duration (years)
|
0.8 (0.3 – 2.0)
|
12.5 (6 – 28)
|
|
HLA B27 positive (%)
|
90
|
90
|
|
BASDAI
|
4.6 (3.5 – 6.7)
|
5.9 (3.2 – 8.0)
|
|
BASDAI 2
|
6.0 (4 – 10)
|
7.0 (6 – 10)
|
|
BASFI
|
3.0 (0.5 – 6.2)
|
4.6 (0.8 – 7.8)
|
|
BASMI
|
1.0 (0 – 2)
|
2.0 (0 – 5)
|
|
ESR (mm/h)
|
8.0 (1 – 42)
|
16.5 (5 – 64)
|
- Values presented are median (range) unless otherwise stated
- BASDAI: Bath Ankylosing Spondylitis Disease Activity Index [21]; BASDAI 2: second question of the BASDAI instrument dealing with back pain; BASFI: Bath Ankylosing Spondylitis Functional Index [23]; BASMI: Bath Ankylosing Spondylitis Metrology Index [24]; ESR: Erythrocyte Sedimentation Rate
