The median follow-up for patients with stage III in the laparoscopic group was 37 months (interquartile range [IQR], 31-41 months) and in the open group, 38 months (IQR, 34-41 months; with stage II in the laparoscopic group, 38 months (IQR, 36-44 months) and in the open group, 39 months (IQR, 37-45 months); and with stage I in the laparoscopic, 39 months (IQR, 37-45 months) and in the open group, 39 months (IQR, 37-45 months).