“…We found that overall odds of morality were lower in those with level I transfers, compared with those managed at a non-level I trauma center. Data from a number of studies have demonstrated significantly lower mortality for trauma patients treated in designated trauma centers compared with those treated in nontrauma hospitals [1,2]; however, several large meta-analyses concluded that available evidence suggests that there is no difference in mortality between transfer and direct admissions [3,30]. Although the NTDB does not record the cause of death, renal trauma is rarely attributed to the cause of mortality, suggesting that other injuries may be driving the differences that we found in mortality [31].…”