Σύγκριση μεθόδων

	Ευρετήριο Κατάθλιψης Beck-II (BDI-II)	Καθολική Εκτίμηση Αλλαγής από τον Ασθενή (PGIC)
Πεδίο	Κλινική Ψυχολογία	Κλινική Ψυχολογία
Οικογένεια	Process / pipeline	Process / pipeline
Έτος προέλευσης	1996	1976
Δημιουργός	Aaron T. Beck	William Guy
Τύπος	Self-report questionnaire	Self-report single-item rating
Θεμελιώδης πηγή	Beck, A. T., Steer, R. A., & Brown, G. K. (1996). Beck Depression Inventory (2nd ed.). San Antonio, TX: The Psychological Corporation. ISBN: 9780151840045	Guy, W. (1976). ECDEU Assessment Manual for Psychopharmacology. Rockville, MD: National Institute of Mental Health, US Department of Health, Education, and Welfare.
Εναλλακτικές ονομασίες	BDI-II, Beck Depression Inventory Second Edition	PGIC, Patient Global Impression of Change Scale
Συναφείς	4	4
Σύνοψη	The Beck Depression Inventory-II is a 21-item self-report instrument designed to assess the presence and severity of depressive symptoms in adolescents and adults. Originally published by Aaron T. Beck in 1961 and revised significantly in 1996, the BDI-II is one of the most widely used depression assessment tools in clinical psychology and psychiatry. It is copyrighted and distributed by Pearson Assessments, and measures both cognitive and somatic symptoms of depression across a two-week timeframe.	The Patient Global Impression of Change is a single-item, seven-point rating scale asking patients to report their overall impression of change since treatment initiation. Originally published by William Guy in the ECDEU Assessment Manual in 1976, the PGIC has become a standard co-primary endpoint in clinical trials assessing treatment efficacy. The scale is endorsed by the FDA as a patient-reported outcome measure for demonstrating clinical benefit. Despite its simplicity, the PGIC captures patients' holistic perception of improvement—integrating symptom reduction, functional recovery, and subjective well-being.