II. Indications
- Confirmation of Major Depression
- Intended for use in combination with PHQ-2
III. Grading: Answer key for 9 questions below
- Not at all: 0
- Several days: 1
- More than half the days: 2
- Nearly every day: 3
IV. Criteria
- Notes
- Summary of questionnaire below is not verbatim
- Format changed into outline form
- Represents a total of 9 questions (main headings)
- Use standardized wording for administering PHQ-9
- Patient Health Questionaire for Adolescents (PHQ-A) is nearly identical to PHQ-9
- Wording under concentration question in PHQ-A includes school work concentration
- Summary of questionnaire below is not verbatim
- In past 2 weeks, how often have you been bothered by:
- Little interest or pleasure in doing things?
- Feeling down, depressed or hopeless?
- Sleep problems?
- Trouble falling asleep
- Trouble staying asleep
- Sleeping too much
- Feeling tired or having no energy?
- Poor appetite or Overeating?
- Feeling bad about yourself?
- That you are a failure
- Have let yourself or your family down
- Trouble concentrating on things?
- Reading the newspaper
- Watching television
- School work (part of PHQ for Adolescents)
- Altered energy
- Moving or speaking so slowly people have noticed or
- So fidgety or restless - moving around a lot more
- Thoughts of Suicide
- Thoughts that You would be better off dead
- Thoughts of hurting yourself in some way
V. Interpretation: Based on scoring of 9 questions above
- Score 0-4: No depression symptoms
- Score 5-9: Minor depression symptoms
- Score 10-14: Moderate depression symptoms
- Score 15-19: Moderate to severe depression symptoms
- Score 20 or more: Severe depression symptoms
VI. Efficacy: PHQ-9
- Test Sensitivity: 88%
- Test Specificity: 88%