| 
      
        | Components | Functional Success |  |  
        |  | Odd Ratio (95% CI) | p value |  
        | 20G vs 23G vitrectomy | 0.336 (0.082-1.38) | 0.131 |  
        | Preoperative bevacizumab | 0.914 (0.337-2.48) | 0.859 |  
        | Preoperative laser | 2.67 (0.879-8.12) | 0.083 |  
        | Intraoperative membrane blue | 1.323 (0.292-5.988) | 0.716 |  
        | Combined PPV/phacomulsificationvs PPV alone
          Intraoperative triamcinolone | 0.93 (0.37-2.33)
          0.371 (0.141-0.975) | 0.88
          0.044 |  
        | Intraoperative silicone oil | 0.788 (0.028-0.224) | <0.001 |  
        | Intraoperative triamcinolone* | 0.361 (0.137-0.948) | 0.039 |  
        | Intraoperative silicone oil* | 0.079 (0.028-0.224) | <0.001 |  | 
  
    | *Multivariate analyses adjusted for age,    gender, preoperative best-corrected visual acuity and the parameters in the    table, with level of significance at p<0.05. | 
  
    | Table 4: The preoperative and intraoperative surgical factors related to overall functional success at postoperative month 12. |