Table 1 Demographic and disease-related characteristics of patients with ankylosing spondylitis

Age (years)^a

27.65 ± 8.34

Gender: female, n (%)^b

80 (25.5)

Years of education, n (%)^b

   ≤6 years

8 (2.5)

   7-9 years

54 (17.2)

   10-12 years

78 (24.8)

   13-17 years

156 (49.7)

   ≥18 years

8 (5.7)

Number employed, n (%)^b

191 (60.8)

Number of students, n (%)^b

89 (28.3)

Married, n (%)^b

177 (56.4)

ESR (mm/h)^a

16.80 ± 18.78

CRP (mg/dl)^a

1.62 ± 3.45

Disease duration (years)^a

6.07 ± 4.90

Morning stiffness (minutes)^a

11.90 ± 27.80

Fingertip-to-floor distance (cm)^a

9.77 ± 13.70

Overall assessment of health (VAS)^a

5.34 ± 2.87

Nocturnal pain (VAS)^a

3.69 ± 2.95

Total back pain (VAS)^a

3.85 ± 2.70

BASMI^a

1.39 ± 1.89

BASDAI (VAS)^a

3.58 ± 2.09

BASFI (VAS)^a

1.64 ± 2.17

PSQI^a

6.62 ± 3.62

SDS^a

47.26 ± 10.45

SAS^a

48.36 ± 8.10