32 injuries per million population or 7800 injuries in the US each year

Most researchers feel that these numbers represent significant under- reporting. Injuries not recorded include cases where the patient instantaneously or soon after the injury, cases with little or no remaining neurological deficit, and people who have neurologic problems secondary to trauma, but are not classified as SCI. Researchers estimate that an additional 20 cases per million (4860 per year) die before reaching the hospital.