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Table 5 Change in CDI among knees with and without structural progression

From: Development of a rapid knee cartilage damage quantification method using magnetic resonance images

  Joint Space Narrowing (JSN)
  No structural progression Structural progression p-value
  n Mean SD SRM n Mean SD SRM  
Femur CDI (Change) 74 −35.73 50.14 −0.71 25 −87.82 68.62 −1.28 <0.0001
Tibia CDI (Change) 74 −10.86 23.99 −0.45 25 −63.83 46.02 −1.39 <0.0001
Tibiofemoral CDI (Change) 74 −46.58 57.48 −0.81 25 −151.7 90.95 −1.67 <0.0001
  Kellgren-Lawrence (KL)
  No structural progression Structural progression p-value
  n Mean SD SRM n Mean SD SRM  
Femur CDI (Change) 58 −40.53 49.84 −0.81 39 −64.06 70.06 −0.91 0.060
Tibia CDI (Change) 58 −15.86 33.21 −0.48 39 −37.23 43.34 −0.86 0.007
Tibiofemoral CDI (Change) 58 −56.39 64.12 −0.88 39 −101.3 96.68 −1.05 0.007
  1. Notes: Structural Progression, JSN/KL has different grade at baseline and follow- up; N = number of knees (the numbers were excluded JSN = 3 and KL = 4 since both of them are the highest grade, no grade change happens); SD = standard deviation; SRM = standardized response mean.