The UAS was used in 1489 procedures, while other methods were used in 319 procedures.  Operation time was 46.9 (17.3) minutes and 42.9 (19.0) minutes with other methods.  Postoperative double J stent usage rates were 88.2% and 63% in the UAS and other methods, respectively.  The rate of successful outcome was 88.2% and 81.2% in the UAS and other methods, respectively (P<.001). 
THERM