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Table 4 Prevalence of focal knee abnormalities in the incidence and control groups

From: Texture analysis of cartilage T2 maps: individuals with risk factors for OA have higher and more heterogeneous knee cartilage MR T2 compared to normal controls - data from the osteoarthritis initiative

Lesion Control group a (n = 53) Incidence group a (n = 92) Odds ratio b 95% confidence interval
Cartilage      
   WORMS >0 33 (73.3%) 59 (67.0%) 0.83 0.36 1.88
   WORMS ≥2 19 (42.2%) 44 (50.0%) 1.42 0.66 3.05
Bone marrow lesions 19 (42.2%) 29 (32.9%) 0.64 0.29 1.40
Meniscus      
   WORMS >0 18 (40.0%) 42 (47.7%) 1.52 0.71 3.30
   WORMS ≥2 9 (15.5%) 22 (25.0%) 2.16 0.73 6.35
  1. aEight subjects from the control group and four subjects from the incidence group did not have whole-organ magnetic resonance imaging score (WORMS) readings available. bAll P values were greater than 0.05 using a logistic regression both when unadjusted and when adjusted for age, body mass index, and gender.