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Table 1 Characteristics of the subjects

From: The usefulness of bone SPECT/CT imaging with volume of interest analysis in early axial spondyloarthritis

  Early axial SpA (n =20) Controls (n = 13) p-values
Age when diagnosis was made (yr) 35.3 ± 12.5 42.5 ± 13.4 0.128
Age of symptom onset (yr) 33.2 ± 13.5 34.2 ± 13.4 0.945
Body mass index (BMI) 24.2 ± 4.5 23.8 ± 1.4 0.905
Gender ratio (M:F) 12:8 4:9 0.157
HLA-B27 (+) 10/20 0/13 0.002*
Peripheral arthritis (+) 10/20 0/13 0.002*
Enthesitis (+) 3/20 0/13 0.261
Uveitis (+) 1/20 0/13 1.000
Family history of SpA (+) 2/20 0/13 0.507
ESR (mm/h) 27.9 ± 7.0 10.5 ± 3.2 0.032*
CRP (mg/L) 1.7 ± 0.6 0.2 ± 0.1 0.004*
  1. SpA = spondyloarthritis; ESR = erythrocyte sedimentation rate; CRP = C-reactive protein.
  2. *Statistically significant.
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