Patient Global Impression of Change Scale
~1 Minute to Administer
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Free / No Cost
What It Measures
The Patient Global Impressions scale (PGI), also known as Subject Global Impression (SGI), is the PRO counterpart to the Clinical Global Impressions scale, (CGI), which was published in 1976 by the National Institute of Mental Health (US). It consists of one item based on the CGI and adapted to the patient.