7.19. Clinical Global Impressions scale (CGI)

The CGI rates illness severity, global improvement, and the efficacy/side-effect balance of treatment. The CGI-I is a subset with just the improvement subscale.

7.19.1. History and guide

Original: Guy (1976), at http://www.archive.org/stream/ecdeuassessmentm1933guyw — Guy W (1976) ECDEU Assessment Manual for Psychopharmacology, revised, 1976. Biometric Laboratory, The George Washington University, Maryland. US Department of Health, Education, and Welfare; Public Health Service; Alcohol, Drug Abuse, and Mental Health Administration; National Institute of Mental Health.

More detail at http://www.cnsforum.com/clinicalresources/ratingscales/ratingpsychiatry/global_clinical_impression/.

7.19.2. Source

Guy (1976), as above.

A trivial modification has been made: questions are asked about therapeutic effect and side effects separately, and are then combined to give the same score as the original CGI method (which required a simultaneous rating on those two dimensions).

Also http://www.outcometracker.org/scales_library.php.

7.20. Clinical Global Impressions – Improvements scale (CGI-I)

Note

[FROM-LP] Recommended by FROM-LP, as part of the core generic set. [Royal College of Psychiatrists (2015). Framework for Routine Outcome Measurement in Liaison Psychiatry (FROM-LP). Faculty report FR/LP/02. https://www.rcpsych.ac.uk/pdf/FRLP02.pdf.]

This is a subset of the CGI.