PVAN group Non-PVAN group  P
Gender (Male/Female)  20/11 208/112 >0.05
Age (yr.) 36.8±10.1 37.4±11.2 >0.05
Postoperative onset time (mon)  9.25±3.7 11.4±5.6 >0.05
Historical events      
Acute rejection (n/%) 2 (6.5%) 22 (6.9%)  >0.05
FK506 nephrotoxicity (n/%)  4 (12.9%) 16 ( 5.0%)  <0.05
Pneumonia (n/%)  6 (19.4%)  21 (6.6%)   <0.05
Immunosuppressive schema      
CsA+MMF+Pred (CMP)  6 (19.4%) 60 (18.8%) >0.05
Tac+MMF+Pred (TMP)  20(64.5%) 188 (58.8%)   >0.05
Tac+MMF+Pred+TII (TMPT)  5(16.1%) 72 (22.5%) >0.05
Serum creatinine level (mg/dl) 2.7±1.5 1.1±1.2   <0.05
BKVAN: BK virus associated nephropathy CsA: cyclosporine A, MMF: mycophenolate mofetil,Tac: tacrolimus,Pred: prednisone TII: Tripterygium Wilfordii
Table 1: Comparison of baseline data between two groups