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Table 1 Baseline characteristics of the study groups

From: Novel nomogram for predicting the progression of osteoarthritis based on 3D-MRI bone shape: data from the FNIH OA biomarkers consortium

  Control cohort (n = 303) Case cohort (n = 297) p-value
BMI, kg/m2 30.70 ± 4.85 30.73 ± 4.72 0.998
minJSW 3.88 ± 1.01 3.78 ± 1.32 0.16
Age, yr 60.69 ± 9.04 62.42 ± 8.65 0.017
WOMADL 8.32 ± 10.85 9.00 ± 10.43 0.226
WOMKP 11.82 ± 15.30 12.36 ± 15.95 0.513
KL grade, n (%)    0.002
 1 37 (12.21 %) 38 (12.79 %)  
 2 175 (57.76 %) 131 (44.11 %)  
 3 91 (30.03 %) 128 (43.10 %)  
Female sex, n (%) 197 (65.02 %) 156 (52.53 %) 0.002
Race, n (%)    0.691
 0: Other Non-white 6 (1.48 %) 5 (2.58 %)  
 1: White 320 (78.82 %) 155 (79.90 %)  
 2: White or Caucasian 77 (18.97 %) 32 (16.49 %)  
 3: Aian 3 (0.74 %) 2 (1.03 %)  
Baseline bone shape
 Femur OA Vector 0.50 ± 2.60 0.01 ± 2.58 < 0.001
 Tibia OA Vector -0.03 ± 1.15 -0.34 ± 1.25 0.002
 Patella OA Vector 0.01 ± 1.57 -0.56 ± 1.74 < 0.001
  1. Femur OAVector the femur bone shape, Tibia OAVector the tibia bone shape,
  2. Patella OAVector the patella boneshape