Evidence-based practice principles: using the highest level when evidence is limited.

Clinicians providing psychiatric care are often faced with selecting interventions in areas of care for which there is limited scientific support, such as the information on traumatic stress responses and integrated care interventions. If they adhere to the principles of evidence-based practice (EBP), the lack of scientific support should not hamper clinicians from implementing the best EBP intervention. EBP interventions can be drawn from the literature provided clinicians accurately appraise the level of existing scientific knowledge. Regardless of the level of evidence, clinicians must discuss the recommended intervention, risks, benefits, and alternatives to achieve the best EBP outcome.