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Table 1 Baseline characteristics of 298 patients with ankylosing spondylitis

From: Incidence and predictors of morphometric vertebral fractures in patients with ankylosing spondylitis

Characteristics

Number (%)

Mean ± SD

Sex

  

Women

61 (20.5)

 

Male

237 (79.5)

 

Age (years)

 

33.9 ± 10.9

Age at diagnosis (years)

 

30.1 ± 10.8

Disease duration (years)

 

3.8 ± 5.1

Family history of AS

27 (9.1)

 

HLA-B27-positive1

244 (92.1)

 

Back pain

293 (98.7)

 

History of peripheral arthritis

190 (63.8)

 

History of enthesitis

71 (23.8)

 

History of uveitis

87 (29.7)

 

BASDAI, score

 

5.4 ± 1.8

Sacroiliitis grade

  

Right

 

3.1 ± 0.7

Left

 

3.1 ± 0.7

Mean sacroiliitis grade

 

3.1 ± 0.7

SASSS, score (range)

 

8.6 ± 15.9 (0 to 69)

ESR, mm/h

 

28.6 ± 25.8

CRP, mg/L

 

1.7 ± 3.1

Patients on NSAIDs

245 (82.2)

 

Patients on sulfasalazine

141 (47.3)

 

Patients on MTX

86 (29.1)

 

Patients on TNF inhibitors

118 (39.6)

 

Patients on calcium

22 (11.1)

 

Patients on bisphosphonate

8 (2.7)

 
  1. 1Confirmed in 265 patients. AS, ankylosing spondylitis; BASDAI, Bath AS disease activity index; SASSS, Stokes ankylosing spondylitis spine score; NSAIDs, non-steroidal anti-inflammatory drugs; MTX, methotrexate; TNF, tumor necrosis factor.