translation: Nghiên cứu cắt ngang. Phương pháp chọn mẫu thuận tiện. Các biến số được khảo sát trên bệnh nhân CTSN vào khoa CC BVTW Huế.
translation: This is a cross sectional study. Population of interest: Patients with trauma who transported to ED of Hue Central Hospital and classified as moderate and severe head injuries were chosen conveniently into the study. Inclusion criteria: Patients with trauma by any reason; Glasgow score < = 13, Sample size: There was not limitation of case number.