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Item of data in Laser group and RNU group
| Item | Laser | RNU | P value |
|---|---|---|---|
| Number of patients | 32 | 107 | – |
| Male/female | 21/11 | 76/31 | > 0.01 |
| Right/left | 13/19 | 41/66 | > 0.01 |
| Age (years) | 69.3 ± 11 | 62.3 ± 9.4 | > 0.01 |
| Length of hospitalization | 3.6 ± 1.9 | 8.6 ± 2.4 | < 0.01 |
| Renal pelvis/ureter | 4/28 | 29/78 | < 0.05 |
| Low / High grade | 27/5 | 75 /32 | < 0.01 |
| Tumor size (mm) | 3 ± 7 | 23 ± 15 | < 0.01 |
| Cr level 1 day post-operatively(umol/L) | 89 ± 7.5 | 123 ± 9.4 | < 0.01 |
| Recurrence rate | 7/32 (21.9%) | 8/107 (7.8%) | < 0.01 |
