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	Scala di Valutazione della Depressione di Montgomery-Åsberg (MADRS)	Questionario sulla Salute del Paziente-9 (PHQ-9)
Campo	Psicologia clinica	Psicologia clinica
Famiglia	Process / pipeline	Process / pipeline
Anno di origine	1979	2001
Ideatore	Stuart Montgomery & Marie Åsberg	Kurt Kroenke
Tipo	Clinician-rated interview scale	Self-report questionnaire
Fonte seminale	Montgomery, S. A., & Åsberg, M. (1979). A new depression scale designed to be sensitive to change. British Journal of Psychiatry, 134, 382–389.	Kroenke, K., Spitzer, R. L., & Williams, J. B. (2001). The PHQ-9: validity of a brief depression severity measure. Journal of General Internal Medicine, 16(9), 606–613.
Alias	MADRS, Montgomery-Asberg Depression Rating Scale	PHQ-9, Patient Health Questionnaire Depression Module
Correlati	5	5
Sintesi	The Montgomery-Åsberg Depression Rating Scale is a 10-item clinician-rated assessment designed by Stuart Montgomery and Marie Åsberg in 1979 to measure depression severity and track treatment response. Published in the British Journal of Psychiatry, the MADRS was developed as an alternative to longer instruments like the Hamilton Depression Rating Scale, emphasizing items most sensitive to treatment change. It has become a primary outcome measure in antidepressant trials and is widely used in both research and clinical practice across psychiatry, primary care, and medical specialty settings.	The PHQ-9 is a brief, nine-item self-report questionnaire developed by Kroenke, Spitzer, and Williams to screen for and measure the severity of depressive symptoms. Published in 2001 in the Journal of General Internal Medicine, it has become one of the most widely used depression screening instruments globally. The scale maps directly to DSM-IV diagnostic criteria for major depressive disorder, making it valuable in both clinical and research settings.