fa حوادث ترافیکی traffic accidents پژوهشي Research <div style="text-align: justify;"><span style="font-size:14px;"><span style="font-family:Tahoma;"><span style="line-height:2;"><strong>Background</strong>: One of the leading causes of death, especially in developing countries, is road traffic accident. The Glasgow coma scale, age, systolic blood pressure (GAP) scoring system is a quantitative method to predict the mortality of trauma patients. Considering the importance of preventing deaths caused by road traffic accidents, this study aims to predict the mortality of road traffic injured patients admitted to a hospital in Isfahan, Iran in 2019 using the GAP score.<br> <strong>Materials and Methods</strong>: This is a cross-sectional study using the exiting data. The study population included all road traffic injured people transferred to Ayatollah Kashani Hospital in Isfahan by the emergency medical services (EMS) ambulances during November and December, 2019 and January, 2020 (n=2674). The medical files of 1985 injured were finally included in this research. A researcher-made checklist was used to collect data. Descriptive statistics were used to present the data and the receiver operating characteristic (ROC) curve was used to evaluate the accuracy of the scoring system.&nbsp;<br> <strong>Results</strong>: Based on the GAP score, 19 people (0.98%) were in the high-risk group, 1267(63.81%) in the moderate-risk group, and 699(35.21%) were in the low-risk group. It was found that 4 people from the high-risk group (21%), 7 from the moderate-risk group (1%) and 3 from the low-risk group (1%) had died. The best cut-off point of the GAP score in predicting short-term (24-hour) road traffic mortality was 15 and with a sensitivity of 96%.<br> <strong>Conclusion</strong>: Most of death cases in road traffic injured patients referred to Ayatollah Kashani Hospital during three months were related to the high-risk groups (GAP score: 3-10). The GAP score can predict the hospital mortality of road traffic injuries accurately and easily.</span></span></span></div> Road traffic accidents, GAP (Glasgow coma scale, age, systolic blood pressure) score, Mortality 115 122 http://hdq.uswr.ac.ir/browse.php?a_code=A-10-519-1&slc_lang=fa&sid=1 Golrokh Atighechian atighechian@mng.mui.ac.ir 0000-0003-3290-2765 No Department of Health in Disasters and Emergencies, Health Management and Economics Research Center, School of Management and Medical Information Sciences, Isfahan University of Medical Sciences, Isfahan, Iran. Zohreh Taghiyan ztaghiyan@yahoo.com 0000-0001-8464-4070 Yes Student Research Committee, Department of Health Services Management, School of Management and Medical Information Sciences, Isfahan University of Medical Sciences, Isfahan, Iran. Mohammed Nasr Isfahani m_nasr@med.mui.ac.ir 0000-0002-5496-9170 No Department of Emergency Medicine, School of Medicine, Al-Zahra Hospital, Isfahan University of Medical Sciences, Isfahan, Iran.