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Table 2 Comparison of the demographics and HRpQCT parameters in the AS patients and healthy age-matched controls

From: Bone microarchitecture in ankylosing spondylitis and the association with bone mineral density, fractures, and syndesmophytes

   AS patients Healthy controls Significance
     P value
Demographics Male % 100 100  
  Age (years) 49 ± 14 49 ± 14 0.993
  BMI kg/m2 26.6 ± 4.4 27.8 ± 4.6 0.117
  Height cm 177 ± 7 179 ± 7 0.358
  Weight kg 84 ± 14 89 ± 16 0.052
HRpQCT radius DTrab mg/cm3 181 ± 39 187 ± 39 0.460
  DCort mg/cm3 850 ± 55 874 ± 42 0.007
HRpQCT tibia DTrab mg/cm3 187 ± 35 201 ± 41 0.033
  DCort mg/cm3 844 ± 53 845 ± 44 0.944
  1. The youngest AS patient was excluded from this analysis because of lack of a healthy control. Calculations on the tibia were made on 68 patients and controls and on radius of 61 patients and controls. The HRpQCT measurements of the radius from seven AS patients had to be excluded towing to motion artefacts. BMI, body mass index; DCort, vBMD of cortical peripheral bone; DTrab, vBMD of trabecular peripheral bone; HRpQCT, high-resolution peripheral quantitative computed tomography.