|   组别  |       A组  |       B组  |       t  |       P值  |    
|   术中出血量(ml)  |       51.90 ± 24.83  |       43.50 ± 20.33  |       1.183  |       0.068  |    
|   手术时间(min)  |       89.05 ± 25.96  |       84.25 ± 35.20  |       0.499  |       0.063  |    
|   住院时间(d)  |       6.05 ± 2.04  |       7.15 ± 2.80  |       −1.448  |       0.119  |    
|   结石清除率(SFR)  |       100%  |       100%  |       -  |       -  |    
|   术后WBC计数(×10^9/L)  |       6.12 ± 2.63  |       5.98 ± 2.34  |       0.925  |       0.128  |    
|   术后PTC (ng/ml)  |       1.23 ± 0.58  |       1.19 ± 0.67  |       0.964  |       0.923  |