Effective

Percentage (%)

Mean ± SD

Sex

Male

40

54.8

Feminine

33

45.2

Middle age

32.18 ± 12.44

Geographic origin

Urban area

40

54.8

Rural area

33

45.2

Diagnostic delay

6.8 ± 7.44

Family history

35

47.9

Spine injury

Cervical involvement

9

12.3

Back injury

3

4.1

Lumbar injury

68

93.1

Buttock pain

63

86.3

Talalgia

45

61.6

Anterior chest pain

15

20.5

Peripheral involvement

18

24.7

History of uveitis (n = 35)

21

28.8

Heart attack

3

4.1

Kidney damage

9

12.3

HLAB27 antigen (n = 42)

30

41.1

BASFI

4.6 ± 1.29

BASDAI

3.93 ± 0.91