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	Échelle d'évaluation de la dépression de Hamilton (HAM-D)	Échelle d'Impressions Cliniques Globales (CGI)
Domaine	Psychologie clinique	Psychologie clinique
Famille	Process / pipeline	Process / pipeline
Année d'origine	1960	1976
Auteur d'origine	Max Hamilton	William Guy
Type	Clinician-rated interview scale	Clinician-rated assessment
Source fondatrice	Hamilton, M. (1960). A rating scale for depression. Journal of Neurology, Neurosurgery & Psychiatry, 23(1), 56–62.	Guy, W. (1976). ECDEU Assessment Manual for Psychopharmacology. Rockville, MD: National Institute of Mental Health, US Department of Health, Education, and Welfare.
Alias	HAM-D, HDRS, Hamilton Rating Scale for Depression	CGI, CGI-S, CGI-I
Apparentées	5	4
Résumé	The Hamilton Depression Rating Scale, published by Max Hamilton in 1960, is a clinician-administered interview assessment of depressive symptom severity. The most common version contains 17 items (HAM-D-17), though 21-item and 24-item versions exist. It is considered the gold standard outcome measure in antidepressant drug trials and remains the most cited depression rating scale in the psychiatric literature. Unlike self-report measures, HAM-D requires clinician judgment and observation, making it particularly valuable in research settings where standardized measurement by trained raters is essential.	The Clinical Global Impressions Scale is a clinician-administered two-part assessment developed by William Guy in the ECDEU Assessment Manual (1976) to provide rapid, global ratings of illness severity and treatment response. Part 1 (CGI-Severity) rates current severity; Part 2 (CGI-Improvement) rates change since treatment initiation. The CGI is among the most widely used global outcome measures in psychiatric research and clinical practice, prized for its brevity, interpretability, and ability to capture clinician expertise and nuanced clinical judgment.