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Table 2 Adjusted coefficients of determination (R 2), standardized beta coefficients (β), and level of significance (p) of the base model (age, sex, and BMI) and change in the base model R 2 (Δ) when including bone mineral density (BMD) at the total and regional proximal tibia to predict variance in total WOMAC pain

From: Proximal tibial trabecular bone mineral density is related to pain in patients with osteoarthritis

   Total WOMAC
   R2 β p value
Base model   0.16   0.023
  Age   −0.41 0.011
  Sex   0.19 0.206
  BMI   0.12 0.448
Total epiphyseal   0.28   0.003
  Δ 0.12   0.013
  Age   −0.41 0.007
  Sex   0.08 0.596
  BMI   0.18 0.234
  BMD   −0.38 0.013
Lateral epiphyseal   0.21   0.014
  Δ 0.06   0.083
  Age   −0.40 0.011
  Sex   0.12 0.420
  BMI   0.17 0.275
  BMD   −0.27 0.083
Medial epiphyseal   0.30   0.002
  Δ 0.15   0.006
  Age   −0.39 0.008
  Sex   0.12 0.388
  BMI   0.19 0.186
  BMD   -0.40 0.006
Total metaphyseal   0.27   0.004
  Δ 0.12   0.017
  Age   −0.35 0.019
  Sex   0.12 0.416
  BMI   0.15 0.302
  BMD   −0.35 0.017
  1. BMI body mass index, BMD bone mineral density, WOMAC Western Ontario and McMaster Universities Arthritis Index
  2. Significant values of R 2, Δ, and β are in bold