Patient Health Questionnaire
Patient Health Questionnaire is an easy-to-use tool for both patients and doctors to help them determine the intensity of a patient's depression level and offer them assistance. PHQ is used by several medical health centers and hospitals to help patients discover the intensity of their ailment and decide for themselves to seek help. Especially patients affected by mental health ailments and their families/friends can use the screening tool to help them discover the nature and level of their illness and prompt them to seek help.
The PHQ-9 was developed by Drs. Robert L. Spitzer, Janet B.W. Williams, Kurt Kroenke and colleagues, with an educational grant from Pfizer Inc.