Recommendations for the treatment of schizophrenia are based on existing scientific evidence as developed by Schizophrenia Patient Outcomes Research Team in the US. How many levels exist?

Question

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The Schizophrenia Patient Outcomes Research Team (PORT) recommendations include 7 levels of evidence, ranging from well-established treatments supported by multiple high-quality studies to clinical consensus in areas where the research evidence is lacking.

Recommendations for the Treatment of Schizophrenia Are Based on Existing