Available reporting guidelines for prognostic and diagnostic accuracy studies apply primarily to biological assessment and outcomes, overlooking behavioral issues with major public health and safety implications such as violence. The present study aimed to develop the first set of reporting guidance for predictive validity studies of violence risk assessments: the Risk Assessment Guidelines for the Evaluation of Efficacy (RAGEE) Statement. A systematic search of 8 electronic databases prior to September 2012 identified 279 reporting guidelines for prognostic and diagnostic accuracy studies. Unique items were extracted and modified to make them relevant to risk assessment. A 4-wave Delphi process involving a multidisciplinary team of 37 international experts resulted in a 50-item reporting checklist. The panelists endorsed the RAGEE Statement checklist as being highly satisfactory and as indicating study features that should be reported routinely in manuscripts. Use of these proposed standards has the potential to improve the quality of the risk assessment literature.