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Table 1 Population characteristics

From: Prevalence and risk factors of low bone mineral density in spondyloarthritis and prevalence of vertebral fractures

Variable Mean ± SD
Age, years 44.4 ± 14
Sex, number (%)  
Male 52 (58.4)
Female 37 (41.6)
Disease duration (years) 10.2 ± 10.6
BMI (kg/m2) 26 ± 4.2
ESR (mm 1st H) 10 ± 9.5
CRP (mg/dL) 7.1 ± 11.8
Physician’s global assessment (0–10) 4.2 ± 2.6
Percentage of days with NSAID intake (%) 64 ± 31.3
Current vitamin D level (ng/mL) 22.6 ± 9.4
BASFI score (0–100) 27.1 ± 23.5
BASDAI score (0–10) 6.1 ± 4.8
Femoral neck BMD (g/cm2) 0.795 ± 0.116
Total hip BMD (g/cm2) 0.926 ± 0.121
AP lumbar spine BMD (g/cm2) 1.017 ± 0.172
Lateral lumbar spine BMD (g/cm2) 0.926 ± 0.121
  1. BMI body mass index, ESR erythrocyte sedimentation rate, CRP C-reactive protein, BASFI bath ankylosing spondylitis functional index, BASDAI bath ankylosing spondylitis disease activity index, BMD bone mineral density