| 
      *indicates moderate correlation
        |  | Groups | Age | Gender | Duration of    symptoms | Activities | Hand dominance |  
        |  | Pearson    correlation coefficient | Eta coefficient |  
        | Elbow breadth | Combined | 0.46 | 0.02 | NA | 0.08 | 0.12 |  
        | Case | 0.90 | 0.20 | 0.82 | 0.36 | 0.03 |  
        | Control | 0.40 | 0.08 | NA | 0.17 | 0.18 |  
        | EC-Elbjt | Combined | 0.30 | 0.02 | NA | 0.09 | 0.27 |  
        | Case | 0.57 | 0.01 | 0.82 | 0.12 | 0.05 |  
        | Control | 0.16 | 0.02 | NA | 0.10 | 0.33 |  
        | EC-Abjt | Combined | 0.08 | 0.03 | NA | 0.12 | 0.32 |  
        | Case | 0.78 | 0.009 | 0.86 | 0.15 | 0.10 |  
        | Control | 0.02* | 0.04 | NA | 0.12 | 0.42* |  
        | 0.24* |  
        | EC-Beljt | Combined | 0.81 | 0.02 | NA | 0.23 | 0.44* |  
        | Case | 0.29 | 0.02 | 0.62 | 0.25 | 0.20 |  
        | Control | 0.28 | 0.02 | NA | 0.24 | 0.53* |  
        | Arm length | Combined | 0.76 | 0.09 | NA | 0.07 | 0.06 |  
        | Case | 0.64 | 0.02 | 0.23 | 0.14 | 0.005 |  
        | Control | 0.97 | 0.14 | NA | 0.17 | 0.10 |  Key: EC-Abjt, elbow circumference five cm above the elbow joint;
    EC-Eljt, elbow circumference at the level of the elbow joint; EC-Beljt,
    elbow circumference five cm below the elbow joint; NA, not
    applicable; r=Eta coefficient
 |