|   | 
        Endometriosis | 
        Tubal | 
        Male | 
        Unexplained    Infertility | 
        Combined    Factors | 
        P value | 
       
      
        | FF Leptin | 
        39.1±20.1 | 
        52.7±31.1 | 
        42.2±25.1 | 
        30.2±19.3 | 
        37.1±13.3 | 
        0.1 | 
       
      
        | FF    Activin A | 
        1049.3±347.2 | 
        781.5±329.4 | 
        769.3±360.8 | 
        811.6±267.8 | 
        1159.3±483.3 | 
        0.6 | 
       
     
    Data expressed as means ± standard deviation |