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Table 1 Demographic, laboratory and clinical characteristics of study population

From: Construct validity and responsiveness of the simplified version of Ankylosing Spondylitis Disease Activity Score (SASDAS) for the evaluation of disease activity in axial spondyloarthritis

Patients characteristics

Mean

SD

Median

25 - 75 P

Age (years)

53.40

11.78

54.00

45.00 - 62.00

Disease duration (years)

5.13

4.95

4.00

2.00 - 7.00

ASDAS-ESR

2.48

0.65

2.49

2.06 - 2.93

ASDAS-CPR

2.56

0.77

2.53

2.04 - 3.13

SASDAS (0–10)

20.18

7.33

20.10

14.30 - 25.82

BASDAI (0–10)

4.10

1.48

4.00

3.15 - 5.12

 • BASDAI item 1: fatigue/tiredness

6.00

2.34

6.00

4.00 - 8.00

 • BASDAI item 2: neck back or hip pain

5.04

2.16

5.00

3.75 - 7.00

 • BASDAI item 3: pain and swelling in other joints

4.88

2.65

5.00

3.00 - 7.00

 • BASDAI item 4: discomfort from areas tender to touch

1.98

1.38

2.00

1.00 - 2.25

 • BASDAI item 5: level of morning stiffness

3.73

1.83

3.50

2.50 - 5.00

 • BASDAI item 6: duration of morning stiffness

3.61

2.24

3.00

2.00 - 5.00

BASFI (0–10)

4.47

1.99

4.44

3.20 - 5.55

EQ-5D score (0–1)

0.70

0.13

0.68

0.61 - 0.78

Patient’s global status (0–10)

5.05

2.38

5.00

4.00 - 7.00

CRP level, mg/l

9.19

9.28

6.10

3.30 - 11.44

ESR, mm/hour

17.4

10.51

16.50

8.40 - 20.80

  1. Abbreviations: (ASDAS) Ankylosing Spondylitis Disease Activity Score, (SADSAS) Simplified Ankylosing Spondylitis Disease Activity Score, (BASDAI) Bath Ankylosing Spondylitis Disease Activity Index, (BASFI) Bath Ankylosing Spondylitis Functional Index, (EQ-5D) EuroQol five-dimensional questionnaire, (ESR) Erythrocyte Sedimentation Rarate, (CRP) C-Reactive Protein.