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Table 3 Variables correlation with BMD in differents measurement sites using univariated analysis

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

  AP LS p Femoral neck p Total hip p Lateral LS p
Age 0.11 a 0.31 −0.22 a 0.03 −0.003 a 0.97 −0.08 a 0.52
BMI 0.27 a 0.01 0.24 a 0.02 0.33 a 0.002 0.05a 0.62
Disease duration 0.02 a 0.86 −0.17 a 0.13 −0.13 a 0.21 −0.02 a 0.84
Number of swollen joints 0.20 a 0.06 −0.005 a 0.96 −0.10 a 0.34 −0.25 a 0.03
Number of tender joints −0.22 a 0.04 −0.08 a 0.47 −0.12 a 0.25 −0.32 a 0.005
ESR −0.0008 a 0.99 −0.08 a 0.44 −0.09 a 0.37 0.02 a 0.87
CRP 0.12 a 0.26 −0.05 a 0.63 0.05 a 0.67 0.13 a 0.28
Physician’s global assessement −0.24 a 0.03 −0.20 a 0.06 −0.21 a 0.05 −0.25 a 0.04
% of days with NSAID intake −0.003 a 0.97 −0.16 a 0.15 −0.11 a 0.31 0.07 a 0.57
Current vit D level −0.15 a 0.16 −0.18 a 0.09 −0.23 a 0.03 −0.07 a 0.56
BASFI −0.10 a 0.37 −0.22 a 0.04 −0.19 a 0.07 −0.10 a 0.41
BASDAI −0.26 a 0.01 −0.17 a 0.10 −0.19 a 0.06 −0.29 a 0.01
  1. a:correlation coefficient [95% CI]; p, p value. BMD, Bone mineral density; AP, anterior-posterior; LS, lumbar spine; 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