| 
           | 
           | 
        %    European Ancestry a  | 
        %    African Ancestry a  | 
        %    Amerindian Ancestry a  | 
           | 
       
      
           | 
           | 
        N  | 
        Mean  | 
        (SD)  | 
        Mean  | 
        (SD)  | 
        Mean  | 
        (SD)  | 
        P b  | 
       
      
        All subjects  | 
        Cases  | 
        376  | 
        68.5  | 
        (27.3)  | 
        7.3  | 
        (14.7)  | 
        24.2  | 
        (23.7)  | 
        0.46  | 
       
      
           | 
        Controls  | 
        447  | 
        70.7  | 
        (26.9)  | 
        7.1  | 
        (14.5)  | 
        22.2  | 
        (23.8)  | 
           | 
       
      
        Hispanics only  | 
        Cases  | 
        156  | 
        51.8  | 
        (17.4)  | 
        7.2  | 
        (8.3)  | 
        41.0  | 
        (16.8)  | 
        0.66  | 
       
      
           | 
        Controls  | 
        179  | 
        52.7  | 
        (17.1)  | 
        7.7  | 
        (8.6)  | 
        39.5  | 
        (16.1)  | 
           | 
       
      
        non-Hispanics only  | 
        Cases  | 
        220  | 
        80.4  | 
        (26.8)  | 
        7.3  | 
        (18.0)  | 
        12.3  | 
        (20.5)  | 
        0.60  | 
       
      
           | 
        Controls  | 
        268  | 
        82.7  | 
        (25.6)  | 
        6.6  | 
        (17.3)  | 
        10.7  | 
        (19.0)  | 
           | 
       
     
      aDerived from maximum likelihood estimation methods using 80 ancestry informative markers [8] 
    bHotelling’s T test |