Trauma is one of the leading causes of death and disability in different societies (1). Worldwide, 1.2 million people die each year in road accidents and about 50 million are injured. These figures are projected to increase by about 65% over the next 20 years (1-2).
It is estimated that for every death resulting from injuries, 16 cases result in hospitalization and 400 cases require outpatient services or with limited transient activity (2). Accidents are the leading cause of death in trauma (3). In Iran, trauma is one of the most common causes of death (5, 4). Every year, more than 5 million people around the world die from an accident (570 people per hour). In developing countries, trauma is the leading cause of death in adolescents, as well as the cause of disability and economic damage related to the health of these countries (6). Trauma can be divided according to the location of injury such as head trauma, abdominal trauma, etc. Or based on the characteristics of the causative agent of the trauma, such as penetrating abdominal trauma (for example, with a sharp object) or blunt trauma, as well as thermal or compressive trauma (barotrauma), etc. (7). Impenetrable trauma, slow trauma to physical injury. A part of the body indicates that it may have been caused by an accident or physical blow. The term usually refers to traumatic injury. In addition, bruising is the first type of more advanced injury, such as bruises, abrasions, wounds, and bone fractures. Impact injury is different from incision; Injury in which something like a bullet enters the body (8).

Keywords: Causes of trauma + risk factors in iran+a systematic review and meta-analysis