PATIENT HEALTH QUESTIONNAIRE (PHQ-9)


The Patient Health Questionnaire (PHQ-9) is a 9-items self-reported measure which was developed in 2001 to measure the severity of depression. A higher score indicates a higher level of depression while a lower score indicates a lower level of depression.
K. Kroenke, R.L. Spitzer, J.B.W. Williams, The PHQ-9, J. Gen. Intern. Med. 16 (2001) 606–613.

https://pubmed.ncbi.nlm.nih.gov/?term=PHQ-9%5BTitle%5D&sort=
Each item is scored on a 4-point Likert scale (0 to 3). The response format and numerical values are the following: (0) Not at all, (1) Several days, (2) More than half the days or (3) Nearly every day. The final score is obtained by adding up the values of the different items and can range from 0 to 27.
For each of the following questions, we would like you to answer each question with one of the following options: Not at all, several days, more than half the days, nearly every day. Please read each question and click in the corresponding box.


 
 
Over the last 2 weeks, how often have you been bothered by any of the following problems?
(Click on your answer)
 Not at all Several days More than half the days Nearly every day
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