The trial was planned for 150 patients , but was halted after 75 patients when planned interim analysis showed that SILS patients had more postoperative pain ( pain score : 4.4 1.6 vs 3.5 1.5 ; p = 0.01 ) and higher inpatient opiate usage ( hydromorphone use : 3.9 1.9 mg vs 2.8 1.7 mg ; p = 0.01 ) than 3-port laparoscopy .