Table 4 Results from multiple linear regression analyses with BMD at different measuring sites as the outcome.
From: Osteoporosis in ankylosing spondylitis - prevalence, risk factors and methods of assessment
AP lumbar aBMD | Lateral lumbar aBMD | Lumbar vBMD | Total hip aBMD | Femoral neck aBMD | Total radius aBMD | |||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
Constant all variables | 0.829 | 0.539 | 0.2390 | 0.783 | 0.654 | 0.625 | ||||||
R2 all variables | 0.290 | 0.245 | 0.266 | 0.402 | 0.343 | 0.591 | ||||||
R2 for demographic variables | 0.254 | 0.163 | 0.171 | 0.338 | 0.279 | 0.569 | ||||||
R2 for disease related variables | 0.079 | 0.181 | 0.276 | 0.174 | 0.198 | 0.253 | ||||||
Demographic variables | B | P-value | B | P-value | B | P-value | B | P-value | B | P-value | B | P-value |
Sex | NA | NA | NA | -0.056 | 0.009 | NA | -0.082 | < 0.001 | ||||
Age, years | NA | NA | NA | NA | NA | -0.001 | 0.002 | |||||
Menopause | -0.156 | < 0.001 | -0.104 | < 0.001 | NA | -0.053 | 0.048 | -0.076 | < 0.001 | -0.035 | 0.009 | |
BMI, kg/m2 | 0.014 | < 0.001 | NA | NA | 0.014 | < 0.001 | 0.011 | < 0.001 | 0.004 | < 0.001 | ||
Disease-related variables | B | P -value | B | P -value | B | P -value | B | P -value | B | P -value | B | P -value |
Years since diagnosis | NA | -0.003 | < 0.001 | NA | NA | NA | NA | |||||
Years since symptom debut | NA | NA | -0.001 | < 0.001 | -0.002 | 0.019 | -0.002 | 0.028 | NA | |||
BASMI | NA | NA | -0.006 | < 0.001 | -0.023 | < 0.001 | -0.029 | < 0.001 | -0.008 | 0.016 | ||
Hemoglobin | NA | 0.002 | 0.008 | NA | NA | NA | NA | |||||
WBC | NA | NA | NA | -0.007 | 0.05 | NA | NA | |||||
PLT | 0.000 | 0.003 | NA | NA | NA | NA | NA | |||||