Background-Clinical information collected at baseline can be useful in knowing the clinicalrntrends of mild head injury. One of the constraints of managing mild head injury patients is thernavailability and proper use of computed tomography scans. This clinical trend can be used tornidentify patients who need imaging after mild head injury. As a sub analysis, we comparedrnthe Canadian head computed tomography rule with the New Orleans criteria to selectrnpatients who need computed tomography scans for Ethiopian mild head injury patients. rnObjective- The objective of this study is to see the clinical trends and computedrntomography scan findings of mild head injury patients. rnMethod- A retrospective observational study of adult mild head injury patients who werernseen at the Tikur anbesa specialized hospital. emergency room from December 2018 to Julyrn2021. The study population was adult mild head injury patients who got head computedrntomography scans after evaluation at the Tikur anbesa specialized hospital emergency room.rnThe data will be collected from patients' charts using a structured checklist prepared by therninvestigator. SPSS software version 26 was used. Bivariate and multivariable logistic regressionrnanalyses were performed to identify factors associated with abnormal CT scan findings. Pvaluern