PHQ-9 Questionnaire

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The PHQ-9 is a multipurpose instrument for screening, diagnosing, monitoring and measuring the severity of depression:

  • The PHQ-9 incorporates DSM-IV depression diagnostic criteria with other leading major depressive symptoms into a brief self-report tool.
  • The tool rates the frequency of the symptoms which factors into the scoring severity index.
  • Question 9 on the PHQ-9 screens for the presence and duration of suicide ideation.
  • A follow up, non-scored question on the PHQ-9 screens and assigns weight to the degree to which depressive problems have affected the patient’s level of function.

Clinical Utility
The PHQ-9 is brief and useful in clinical practice. The PHQ-9 is completed by the patient in minutes and is rapidly scored by the clinician. The PHQ-9 can also be administered repeatedly, which can reflect improvement or worsening of depression in response to treatment.

Psychometric Properties

  • The diagnostic validity of the PHQ-9 was established in studies involving 8 primary care and 7 obstetrical clinics.
  • PHQ scores ≥ 10 had a sensitivity of 88% and a specificity of 88% for major depression.
  • PHQ-9 scores of 5, 10, 15, and 20 represents mild, moderate, moderately severe and severe depression.

Please answer the following questions based on how you have been feeling over the past two weeks.

Disclaimer: This is a screening tool only and is not meant to be a diagnostic tool. Please discuss test results with a clinician. If you are in a crisis or have thoughts about wanting to harm yourself please go to the nearest emergency room.

 

1.Little interest or pleasure in doing things
2.Feeling down, depressed, or hopeless
3.Trouble falling or staying asleep, or sleeping too much
4.Feeling tired or having little energy
5.Poor appetite or overeating
6.Feeling bad about yourself – or that you are a failure or have let yourself or your family down
7.Trouble concentrating on things, such as reading the newspaper or watching television
8.Moving or speaking so slowly that other people could have noticed. Or the opposite – being so figety or restless that you have been moving around a lot more than usual
9.Thoughts that you would be better off dead, or of hurting yourself
10.How difficult have these problems made it for you to do your work, take care of things at home, or get along with other people?