|   | 
        Pregnant (N=29)  | 
        Not pregnant (N=61)  | 
        All patients (N=90)  | 
        *P value  | 
       
      
        | Age (years)**  | 
        28.9 ±  4.6  | 
        30.3 ±  5.3  | 
        29.6 ± 5.1  | 
        0.61  | 
       
      
        | Months of Infertility **  | 
        54.6 ± 23.6  | 
        57.8 ± 29.5  | 
        56.7 ± 27.6  | 
        0.64  | 
       
      
        | BMI (kg/m2)**  | 
        24.9 ± 3.6  | 
        25.7 ± 3.1  | 
        25.5 ± 3.3  | 
        0.25  | 
       
      
        | FF leptin (ng/ml)**  | 
        43.5 ± 24.8  | 
        45.7 ± 23.1  | 
        45.2 ± 26.7  | 
        0.62  | 
       
      
        | Activin A (pg/ml)**  | 
        782.2 ± 368.2  | 
        925.2 ± 338.3  | 
        880.8 ± 354.6 | 
        0.53  | 
       
      
        | Day 2 good emb. quality  | 
        25 (86.2%)  | 
        33 (54.1%)  | 
        58 (64.4%)  | 
        0.02 (S)  | 
       
      
        | Fertilization rate **  | 
        65.7 ± 12.7  | 
        65.8 ± 22.2  | 
        65.7 ± 19.7  | 
        0.90  | 
       
     
      **mean ± SD 
    S: Significant at 0.05 level 
    BMI = Body Mass Index; FF = Follicular Fluid |