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Clinical Global Impression-Improvement scale

Clinical Global Impression-Improvement scale

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The Clinical Global Impression-Improvement scale (CGI-I) is a 7-point scale that requires the clinician to assess how much the patient’s illness has improved or worsened relative to a baseline state at the beginning of an intervention. Responses include 1, very much improved; 2, much improved; 3, minimally improved; 4, no change; 5, minimally worse; 6, much worse; or 7, very much worse.

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