Table 2

Comparison of demographic and disease activity/severity variables between patients with and without osteoporosis. Means for continuous variables, % for counts

Spine L2–4Total hipFemoral neck
T⩽−2.5 (n=66)T>−2.5 (n=327)p ValueT⩽−2.5 (n=56)T>−2.5 (n=324)p ValueT⩽−2.5 (n=56)T>−2.5 (n=324)p Value
Age (years)62.853.2<0.00163.953.0<0.00163.753.1<0.001
Disease duration (years)15.912.30.00716.911.8<0.00116.011.90.005
Body mass index22.924.20.00622.524.20.00222.724.20.005
Number of swollen joints9.927.440.0111.197.16<0.00111.467.11<0.001
Number of deformed joints4.161.77<0.0014.891.49<0.0014.631.54<0.001
CRP2-150(mg/l)18.015.80.1720.914.70.00119.914.90.005
ESR2-150 (mm/1st h)24.721.10.1626.620.10.00826.520.10.01
MHAQ2-150 1.741.590.061.811.560.0021.741.570.02
DAS2-150 4.884.420.025.084.370.0015.054.370.001
Current use of corticosteroids (%)66.135.3<0.00164.835.2<0.00166.734.9<0.001
Ever use of corticosteroids (%)80.660.30.00285.258.7<0.00183.359.00.001
Rheumatoid factor positive (%)58.350.60.3268.648.90.0167.349.00.02
Non-vertebral fracture (%)33.918.60.00737.017.30.00144.416.0<0.001
  • 2-150 CRP = C reactive protein; ESR = erythrocyte sedimentation rate; MHAQ = Modified Health Assessment Questionnaire; DAS = disease activity score.