Suicide is the second leading cause of death among 25-34 year olds and the third leading cause of death among 15-25 year olds and ranges from the 10th to 15th leading cause of death in the United States. In the Emergency Department, a particular problem is deciding how to best manage those patients who have presented after attempting, but not completing suicide. We know of no evidence-based risk assessment tool for predicating repeated suicide attempts. Thus, emergency medicine clinicians are often left to deal with suicidal patient with clinical judgment alone. The purpose of the research is to discover new ways to predict suicide.