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Table 3 Univariate Spearman correlations with cartilage loss at 24 months

From: Risk factors associated with the loss of cartilage volume on weight-bearing areas in knee osteoarthritis patients assessed by quantitative magnetic resonance imaging: a longitudinal study

Baseline characteristics Medial central femoral condyle Medial central tibial plateau Both areas (medial compartment) Joint space width (mm)
   P value   P value   P value   P value
Age -0.13 0.18 -0.07 0.49 -0.11 0.26 -0.05 0.58
Gender 0.12 0.24 0.08 0.41 0.11 0.26 0.04 0.66
Body mass index -0.21 0.03 -0.21 0.03 -0.23 0.02 -0.07 0.48
Alcohol 0.02 0.86 0.02 0.82 0.02 0.82 0.18 0.06
Smoking 0.74 0.45 0.09 0.36 0.09 0.35 0.06 0.55
SF-36 -0.14 0.14 -0.03 0.79 -0.09 0.34 -0.05 0.61
WOMAC total -0.05 0.61 -0.02 0.82 0.02 0.88 0.08 0.41
WOMAC subscale         
   Pain 0.10 0.30 0.05 0.58 0.09 0.38 0.14 0.14
   Stiffness 0.04 0.68 -0.07 0.46 -0.06 0.52 -0.0005 0.99
   Function -0.05 0.62 -0.03 0.76 0.01 0.92 0.08 0.42
   Patient global 0.04 0.65 0.12 0.90 0.03 0.75 -0.0004 0.99
Joint space width (mm) 0.29 0.003 -0.28 0.03 0.32 0.001 -- --
Meniscal extrusion -0.31 0.001 -0.26 0.007 -0.32 0.001 -0.16 0.11
Severe meniscal extrusion -0.33 0.001 -0.40 0.0001 -0.41 0.0001 -0.16 0.10
Medial meniscal tear -0.26 0.006 -0.11 0.25 -0.21 0.03 -0.32 0.001
Severe medial meniscal tear -0.36 0.0001 -0.29 0.003 -0.36 0.0001 -0.32 0.001
Lateral meniscal tear 0.21 0.03 0.05 0.60 0.15 0.13 -0.09 0.33
Severe lateral meniscal tear 0.07 0.49 0.04 0.65 0.06 0.52 0.16 0.11
Bone hypersignal -0.26 0.008 -0.23 0.02 -0.27 0.005 -0.11 0.25
Bone hypersignal in the medial compartment -0.11 0.23 -0.10 0.30 -0.12 0.21 -0.03 0.76
Bone hypersignal in the lateral compartment -0.32 0.001 -0.31 0.001 -0.35 0.0001 -0.13 0.17
Changes in selected clinical variables at 24 months Medial central femoral condyle Medial central tibial plateau Both areas (medial compartment) Joint space narrowing
   P value   P value   P value   P value
SF-36 0.07 0.44 0.12 0.23 0.11 0.27 0.10 0.31
WOMAC total -0.05 0.58 -0.10 0.31 -0.09 0.38 -0.23 0.02
WOMAC subscale         
   Pain -0.15 0.12 -0.21 0.03 -0.21 0.03 -0.29 0.002
   Stiffness 0.02 0.85 -0.03 0.74 0.009 0.93 -0.18 0.07
   Function -0.04 0.68 -0.07 0.45 -0.06 0.51 -0.23 0.02
   Patient global -0.17 0.08 -0.17 0.08 -0.19 0.05 -0.02 0.83
Joint space narrowing 0.40 0.003 0.21 0.003 0.34 <0.0001 -- --
  1. WOMAC, Western Ontario and McMaster Universities Osteoarthritis Index.