Patient Health Questionnaire - 9 questions to measure depression

The PHQ-9 (external link) is the depression module of the PRIME-MD(external link) diagnostic instrument for common mental disorders that scores each of the 9 DSM-IV criteria as "0" (not at all) to "3" (nearly every day). It is designed to be self-administered. It generates five categories of depression based on a score between 0 and 27. A threshold score of 10 has a sensitivity and specificity of 88%(external link) for major depression.

Over the last 2 weeks, how often have you been bothered by any of the following problems?

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 fidgety 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 in some way?

Score =

Normal < 5; Mild 5 - 9; Moderate 10-14; Moderately severe 15-19; Severe >=20