Kroenke K, Spitzer RL, Williams JB. The PHQ-9: validity of a brief depression severity measure. J Gen Intern Med. 2001 Sep;16(9):606-13. PubMed PMID: 11556941; PubMed Central PMCID: PMC1495268.

Spitzer RL, Kroenke K, Williams JB. Validation and utility of a self-report version of PRIME-MD: the PHQ primary care study. Primary Care Evaluation of Mental Disorders. Patient Health Questionnaire. JAMA. 1999;282(18):1737-44.

Arroll B, Goodyear-Smith F, Crengle S, Gunn J, Kerse N, Fishman T, Falloon K, Hatcher S. Validation of PHQ-2 and PHQ-9 to screen for major depression in the primary care population. Ann Fam Med. 2010 Jul-Aug;8(4):348-53. doi: 10.1370/afm.1139. PubMed PMID: 20644190; PubMed Central PMCID: PMC2906530.

Chagas MH, Tumas V, Rodrigues GR, et al. Validation and internal consistency of Patient Health Questionnaire-9 for major depression in Parkinson's disease. Age Ageing. 2013;42(5):645-9.

Volker D, Zijlstra-Vlasveld MC, Brouwers EP, et al. Validation of the Patient Health Questionnaire-9 for Major Depressive Disorder in the Occupational Health Setting. J Occup Rehabil. 2016;26(2):237-44.

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Dr. Kurt Kroenke

PHQ-9 (Patient Health Questionnaire-9)

interest

depressed

sleep

tired

appetite

failure

concentration

slow

death

problems_difficult

Objectifies degree of depression severity.

PHQ-9

Ferda Sakman, MD, obtained her medical degree at the Hacettepe University School of Medicine in Ankara, Turkey and completed her adult psychiatry residency at Tufts Medical Center in Boston, MA. She is currently a research fellow in psychiatry at the Mood and Personality Disorders Program at Mount Sinai Hospital and the James J. Peters VA Medical Center in New York City. Her research interests are focused on understanding the multitude of perspectives on investigating the mind and its functioning – including neurobiological, psychological/psychodynamic, and contemplative/transpersonal approaches, among others – and delineating the relationship between these perspectives, especially as it pertains to therapeutics.

Ferda Sakman, MD

The PHQ-9 (Patient Health Questionnaire-9) objectifies and assesses degree of depression severity via questionnaire.

Major Depression Index

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